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Przekop RE, Gabriel E, Dobrosielska M, Martyła A, Jakubowska P, Głowacka J, Marciniak P, Pakuła D, Jałbrzykowski M, Borkowski G. The 3D-Printed (FDM/FFF) Bio composites Based on Polylactide and Carbonate Lake Sediments-Towards a Circular Economy. Polymers (Basel) 2023; 15:2817. [PMID: 37447463 DOI: 10.3390/polym15132817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
In this study, composites containing polylactide and carbonate lake sediment in concentrations of 2.5, 5, 10, and 15% by weight were prepared by a 3D printing method. The material for 3D printing was obtained by directly diluting the masterbatch on an injection moulder to the desired concentrations, and after granulation, it was extruded into a filament. The material prepared thusly was used to print standardised samples for mechanical testing. To compare the mechanical properties of the composites obtained by 3D printing and injection moulding, two sets of tests were performed, i.e., mechanical tests (tensile strength, flexural strength, and impact strength) and hydrophobic-hydrophilic surface character testing. The degree of composite waste in the 3D printing was also calculated. Mechanical and surface tests were performed for both systems conditioned at room temperature and after accelerated ageing in a weathering chamber. The study showed differences in the properties of composites obtained by 3D printing. Sedimentary fillers improved the hydrophobicity of the systems compared with pure PLA, but it was not a linear relationship. The PLA/CLS sedB composite had higher strength parameters, especially after ageing in a weathering chamber. This is due to its composition, in which, in addition to calcite and silica, there are also aluminosilicates, causing a strengthening of the PLA matrix.
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Affiliation(s)
- Robert E Przekop
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Ewa Gabriel
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Marta Dobrosielska
- Faculty of Materials Science and Engineering Warsaw, University of Technology, 141 Wołoska, 02-507 Warsaw, Poland
| | - Agnieszka Martyła
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Paulina Jakubowska
- Faculty of Chemical Technology, Institute of Technology and Chemical Engineering, Poznan University of Technology, 4 Berdychowo, 60-965 Poznań, Poland
| | - Julia Głowacka
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Piotr Marciniak
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Daria Pakuła
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Marek Jałbrzykowski
- Faculty of Mechanical Engineering, Bialystok University of Technology, 45c Wiejska, 15-351 Bialystok, Poland
| | - Grzegorz Borkowski
- Faculty of Geographical and Geological Sciences, Adam Mickiewicz University, 10 B. Krygowskiego, 61-680 Poznań, Poland
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152
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Wardak C, Pietrzak K, Morawska K, Grabarczyk M. Ion-Selective Electrodes with Solid Contact Based on Composite Materials: A Review. Sensors (Basel) 2023; 23:5839. [PMID: 37447689 DOI: 10.3390/s23135839] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Potentiometric sensors are the largest and most commonly used group of electrochemical sensors. Among them, ion-selective electrodes hold a prominent place. Since the end of the last century, their re-development has been observed, which is a consequence of the introduction of solid contact constructions, i.e., electrodes without an internal electrolyte solution. Research carried out in the field of potentiometric sensors primarily focuses on developing new variants of solid contact in order to obtain devices with better analytical parameters, and at the same time cheaper and easier to use, which has been made possible thanks to the achievements of material engineering. This paper presents an overview of new materials used as a solid contact in ion-selective electrodes over the past several years. These are primarily composite and hybrid materials that are a combination of carbon nanomaterials and polymers, as well as those obtained from carbon and polymer nanomaterials in combination with others, such as metal nanoparticles, metal oxides, ionic liquids and many others. Composite materials often have better mechanical, thermal, electrical, optical and chemical properties than the original components. With regard to their use in the construction of ion-selective electrodes, it is particularly important to increase the capacitance and surface area of the material, which makes them more effective in the process of charge transfer between the polymer membrane and the substrate material. This allows to obtain sensors with better analytical and operational parameters. Brief characteristics of electrodes with solid contact, their advantages and disadvantages, as well as research methods used to assess their parameters and analytical usefulness were presented. The work was divided into chapters according to the type of composite material, while the data in the table were arranged according to the type of ion. Selected basic analytical parameters of the obtained electrodes have been collected and summarized in order to better illustrate and compare the achievements that have been described till now in this field of analytical chemistry, which is potentiometry. This comprehensive review is a compendium of knowledge in the research area of functional composite materials and state-of-the-art SC-ISE construction technologies.
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Affiliation(s)
- Cecylia Wardak
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square. 3, 20-031 Lublin, Poland
| | - Karolina Pietrzak
- Department of Food and Nutrition, Medical University of Lublin, 4a Chodzki Str., 20-093 Lublin, Poland
| | - Klaudia Morawska
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square. 3, 20-031 Lublin, Poland
| | - Malgorzata Grabarczyk
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Square. 3, 20-031 Lublin, Poland
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153
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Hasan MM, Hossain MS, Islam MD, Rahman MM, Ratna AS, Mukhopadhyay S. Nontoxic Cross-Linked Graphitic Carbon Nitride-Alginate-Based Biodegradable Transparent Films for UV and High-Energy Blue Light Shielding. ACS Appl Mater Interfaces 2023. [PMID: 37347588 DOI: 10.1021/acsami.3c05659] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
Flexible, transparent, and biodegradable films that can shield dangerous UV and high-energy blue light (HEBL) are high in demand to satisfy the ever-increasing expectations for environmental sustainability. To achieve this goal, biopolymer alginate is an excellent choice that has an outstanding film-forming ability. However, alginate has the limitation of poor UV and HEBL blocking ability. Thus, in this study, UV and HEBL blocker graphitic carbon nitride (g-C3N4) was incorporated in alginate films to enhance the compatibility, applicability, and durability. The ATR-FTIR, TGA, DTG, and FE-SEM results indicated that the composite film formation was due to hydrogen bonding, and the composite films revealed synergistic properties of alginate and g-C3N4. Though the incorporation of g-C3N4 in films enhanced the mechanical and thermal stabilities of the films, the films were still flexible. The UV-visible transmittance characterization confirmed that the prepared films could block both UV and HEBL radiation while maintaining transparency in visible regions. In experiments involving only 2 wt % g-C3N4, nearly 90% of UV (200-400 nm) and 95% of HEBL (400-450 nm) irradiation were blocked. Additionally, the inclusion of g-C3N4 also facilitated the biodegradation process of composite films. Moreover, after 6 months, the composite films exhibited excellent UV and HEBL shielding with excellent mechanical durability.
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Affiliation(s)
- M Mehedi Hasan
- Applied Chemistry and Chemical Engineering, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Md Sajib Hossain
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Didarul Islam
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
| | - Md Mahfuzur Rahman
- Industrial and Production Engineering, Jashore University of Science and Technology (JUST), Jashore 7408, Bangladesh
| | - Aditi Sarker Ratna
- National Institute of Textile Engineering and Research, University of Dhaka, Dhaka 1000, Bangladesh
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154
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Spišák E, Nováková-Marcinčínová E, Nováková-Marcinčínová Ľ, Majerníková J, Mulidrán P. Investigation of the Manufacturing Orientation Impact on the Mechanical Properties of Composite Fiber-Reinforced Polymer Elements in the Fused Filament Fabrication Process. Polymers (Basel) 2023; 15:2757. [PMID: 37447404 DOI: 10.3390/polym15132757] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/09/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
This article examines the mechanical properties and compatibility of selected composite materials produced with RP technology and the FFF-fused filament fabrication process. The article scales sophisticated modern materials based on PLA-polylactic acid-plastic and its composite variants. The research is carried out on the 3D FFF printer Felix 3.1 with a dual extruder, which works on the "open-source" principle. In this research, elements of the paradigm and methodology of the processing technology for RP were applied; they were implemented according to EN ISO 527 and ISO 2602 standards. The aim of this study was to investigate the impact of 3D-printing strategy on the mechanical properties of 5 types of PLA composites. The results of this research solve the material compatibility problem, primarily through experimental testing of different combinations of filaments in different printing directions. Analysis of the experimental data showed correlations between the choice of printing strategy and mechanical properties, mainly tensile strength of the selected filaments. The research results show the influence of the printing orientation on mechanical properties of 3D printed samples: parts extruded in length orientation showed higher values of tensile strength compared to parts made in width and height. The CarbonPLA material exhibited 10 times higher tensile strength when printed in length compared to samples.
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Affiliation(s)
- Emil Spišák
- Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia
| | | | - Ľudmila Nováková-Marcinčínová
- Faculty of Manufacturing Technologies with a Seat in Prešov, Technical University of Kosice, Bayerova 1, 080 01 Prešov, Slovakia
| | - Janka Majerníková
- Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia
| | - Peter Mulidrán
- Faculty of Mechanical Engineering, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia
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155
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Forysenkova AA, Fadeeva IV, Deyneko DV, Gosteva AN, Mamin GV, Shurtakova DV, Davydova GA, Yankova VG, Antoniac IV, Rau JV. Polyvinylpyrrolidone-Alginate-Carbonate Hydroxyapatite Porous Composites for Dental Applications. Materials (Basel) 2023; 16:4478. [PMID: 37374661 DOI: 10.3390/ma16124478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/13/2023] [Accepted: 06/18/2023] [Indexed: 06/29/2023]
Abstract
An alternative approach for the currently used replacement therapy in dentistry is to apply materials that restore tooth tissue. Among them, composites, based on biopolymers with calcium phosphates, and cells can be applied. In the present work, a composite based on polyvinylpyrrolidone (PVP) and alginate (Alg) with carbonate hydroxyapatite (CHA) was prepared and characterized. The composite was investigated by X-ray diffraction, infrared spectroscopy, electron paramagnetic resonance (EPR) and scanning electron microscopy methods, and the microstructure, porosity, and swelling properties of the material were described. In vitro studies included the MTT test using mouse fibroblasts, and adhesion and survivability tests with human dental pulp stem cells (DPSC). The mineral component of the composite corresponded to CHA with an admixture of amorphous calcium phosphate. The presence of a bond between the polymer matrix and CHA particles was shown by EPR. The structure of the material was represented by micro- (30-190 μm) and nano-pores (average 8.71 ± 4.15 nm). The swelling measurements attested that CHA addition increased the polymer matrix hydrophilicity by 200%. In vitro studies demonstrated the biocompatibility of PVP-Alg-CHA (95 ± 5% cell viability), and DPSC located inside the pores. It was concluded that the PVP-Alg-CHA porous composite is promising for dentistry applications.
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Affiliation(s)
- Anna A Forysenkova
- A.A. Baikov Institute of Metallurgy and Material Science RAS, Leninsky, 49, 119334 Moscow, Russia
| | - Inna V Fadeeva
- A.A. Baikov Institute of Metallurgy and Material Science RAS, Leninsky, 49, 119334 Moscow, Russia
| | - Dina V Deyneko
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
- Laboratory of Arctic Mineralogy and Material Sciences, Kola Science Centre RAS, 14 Fersman Str., 184209 Apatity, Russia
| | - Alevtina N Gosteva
- Tananaev Institute of Chemistry, Kola Science Centre RAS, Akademgorodok 26A, 184209 Apatity, Russia
| | - Georgy V Mamin
- Institute of Physics, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia
| | - Darya V Shurtakova
- Institute of Physics, Kazan Federal University, Kremlevskaya 18, 420008 Kazan, Russia
| | - Galina A Davydova
- Institute of Theoretical and Experimental Biophysics of RAS, Institutskaya 3, Puschino, 142290 Moscow, Russia
| | - Viktoriya G Yankova
- Department of Analytical, Physical and Colloid Chemistry, Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University, Trubetskaya 8, Build. 2, 119991 Moscow, Russia
| | - Iulian V Antoniac
- Faculty of Materials Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei Street, District 6, 060042 Bucharest, Romania
- Academy of Romanian Scientists, 54 Splaiul Independentei Street, District 5, 050094 Bucharest, Romania
| | - Julietta V Rau
- Department of Analytical, Physical and Colloid Chemistry, Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University, Trubetskaya 8, Build. 2, 119991 Moscow, Russia
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere, 100, 00133 Rome, Italy
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156
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Meirelles LMA, de Melo Barbosa R, de Almeida Júnior RF, Machado PRL, Perioli L, Viseras C, Raffin FN. Bio composite for Prolonged Release of Water-Soluble Drugs. Pharmaceutics 2023; 15:1722. [PMID: 37376170 DOI: 10.3390/pharmaceutics15061722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
This study aimed to develop a prolonged-release system based on palygorskite and chitosan, which are natural ingredients widely available, affordable, and accessible. The chosen model drug was ethambutol (ETB), a tuberculostatic drug with high aqueous solubility and hygroscopicity, which is incompatible with other drugs used in tuberculosis therapy. The composites loaded with ETB were obtained using different proportions of palygorskite and chitosan through the spray drying technique. The main physicochemical properties of the microparticles were determined using XRD, FTIR, thermal analysis, and SEM. Additionally, the release profile and biocompatibility of the microparticles were evaluated. As a result, the chitosan-palygorskite composites loaded with the model drug appeared as spherical microparticles. The drug underwent amorphization within the microparticles, with an encapsulation efficiency greater than 84%. Furthermore, the microparticles exhibited prolonged release, particularly after the addition of palygorskite. They demonstrated biocompatibility in an in vitro model, and their release profile was influenced by the proportion of inputs in the formulation. Therefore, incorporating ETB into this system offers improved stability for the administered product in the initial tuberculosis pharmacotherapy dose, minimizing its contact with other tuberculostatic agents in the treatment, as well as reducing its hygroscopicity.
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Affiliation(s)
- Lyghia M A Meirelles
- Laboratory of Drug Development, Department of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil
| | - Raquel de Melo Barbosa
- Laboratory of Drug Development, Department of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Campus de Cartuja s/n, University of Granada, 18071 Granada, Spain
| | | | - Paula Renata Lima Machado
- Immunology Laboratory, Pharmacy Faculty, Federal University of Rio Grande do Norte, Natal 59010-180, Brazil
| | - Luana Perioli
- Department of Pharmaceutic Science, University of Perugia, 06123 Perugia, Italy
| | - César Viseras
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Campus de Cartuja s/n, University of Granada, 18071 Granada, Spain
- Andalusian Institute of Earth Sciences, CSIC-University of Granada, Av. de Las Palmeras 4, 18100 Armilla, Spain
| | - Fernanda Nervo Raffin
- Laboratory of Drug Development, Department of Pharmacy, Federal University of Rio Grande do Norte, Natal 59012-570, Brazil
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157
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Damastuti R, Susanti D, Prasannan A, Hsiao WWW, Hong PD. High Selectivity Fuel from Efficient CO 2 Conversion by Zn-Modified rGO and Amine-Functionalized CuO as a Photocatalyst. Materials (Basel) 2023; 16:4314. [PMID: 37374498 DOI: 10.3390/ma16124314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/01/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
Reduced graphene oxide (rGO) has been used in copper (II) oxide (CuO)-based photocatalysts as an additive material. An application of this CuO-based photocatalyst is in the CO2 reduction process. The preparation of rGO by a Zn-modified Hummers' method has resulted in a high quality of rGO in terms of excellent crystallinity and morphology. However, implementing Zn-modified rGO in CuO-based photocatalysts for the CO2 reduction process has yet to be studied. Therefore, this study explores the potential of combining Zn-modified rGO with CuO photocatalysts and performing these rGO/CuO composite photocatalysts to convert CO2 into valuable chemical products. The rGO was synthesized by using a Zn-modified Hummers' method and covalently grafted with CuO by amine functionalization with three different compositions (1:10, 1:20, and 1:30) of rGO/CuO photocatalyst. XRD, FTIR, and SEM were used to investigate the crystallinity, chemical bonds, and morphology of the prepared rGO and rGO/CuO composites. The performance of rGO/CuO photocatalysts for the CO2 reduction process was quantitively measured by GC-MS. We found that the rGO showed successful reduction using a Zn reducing agent. The rGO sheet could be grafted with CuO particles and resulted in a good morphology of rGO/CuO, as shown from the XRD, FTIR, and SEM results. The rGO/CuO material showed photocatalytic performance due to the advantages of synergistic components and resulted in methanol, ethanolamine, and aldehyde as fuel with amounts of 37.12, 8730, and 17.1 mmol/g catalyst, respectively. Meanwhile, adding CO2 flow time increases the resulting quantity of the product. In conclusion, the rGO/CuO composite could have potential for large-scale CO2 conversion and storage applications.
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Affiliation(s)
- Retno Damastuti
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
| | - Diah Susanti
- Department of Materials and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya 60111, Indonesia
| | - Adhimoorthy Prasannan
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
| | - Wesley Wei-Wen Hsiao
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
| | - Po-Da Hong
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
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158
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Kalva SN, Ali F, Velasquez CA, Koç M. 3D-Printable PLA/Mg Composite Filaments for Potential Bone Tissue Engineering Applications. Polymers (Basel) 2023; 15:polym15112572. [PMID: 37299370 DOI: 10.3390/polym15112572] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/09/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Magnesium (Mg) is a promising material for bone tissue engineering applications due to it having similar mechanical properties to bones, biocompatibility, and biodegradability. The primary goal of this study is to investigate the potential of using solvent-casted polylactic acid (PLA) loaded Mg (WE43) composites as filament feedstock for fused deposition modeling (FDM) 3D Printing. Four PLA/Magnesium (WE43) compositions (5, 10, 15, 20 wt%) are synthesized and produced into filaments, then used to print test samples on an FDM 3D printer. Assessments are made on how Mg incorporation affected PLA's thermal, physicochemical, and printability characteristics. The SEM study of the films shows that the Mg particles are uniformly distributed in all the compositions. The FTIR results indicate that the Mg particles blend well with the polymer matrix and there is no chemical reaction between the PLA and the Mg particles during the blending process. The thermal studies show that the addition of Mg leads to a small increase in the melting peak reaching a maximum of 172.8 °C for 20% Mg samples. However, there are no dramatic variations in the degree of crystallinity among the Mg-loaded samples. The filament cross-section images show that the distribution of Mg particles is uniform up to a concentration of 15% Mg. Beyond that, non-uniform distribution and an increase in pores in the vicinity of the Mg particles is shown to affect their printability. Overall, 5% and 10% Mg composite filaments were printable and have the potential to be used as composite biomaterials for 3D-printed bone implants.
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Affiliation(s)
- Sumama Nuthana Kalva
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha P.O. Box 34110, Qatar
- Surgical Research Section, Innovation Unit, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Fawad Ali
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha P.O. Box 34110, Qatar
| | - Carlos A Velasquez
- Surgical Research Section, Innovation Unit, Hamad Medical Corporation, Doha P.O. Box 3050, Qatar
| | - Muammer Koç
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha P.O. Box 34110, Qatar
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159
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Grantham DW, Doerhoff CR, Linn JG, Mallico EJ, Washington RG. Evaluation of Long-term Performance of the GORE SYNECOR Intraperitoneal Biomaterial in the Treatment of Inguinal Hernias. Surg Laparosc Endosc Percutan Tech 2023; 33:231-234. [PMID: 36971525 PMCID: PMC10234318 DOI: 10.1097/sle.0000000000001166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/14/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND The objective of this study was to analyze device safety and clinical outcomes of inguinal hernia repair with the GORE SYNECOR Intraperitoneal Biomaterial device, a hybrid composite mesh. METHODS This retrospective case review analyzed device/procedure endpoints beyond 1 year in patients treated for inguinal hernia repair with the device. Three objectives were evaluated: procedural endpoint-incidence through 30 days of surgical site infection, surgical site occurrence (SSO), ileus, readmission, reoperation, and death; device endpoint-serious device incidence of mesh erosion, infection, excision/removal, exposure, migration, shrinkage, device-related bowel obstruction and fistula, and hernia recurrence through 12 months; and patient-reported outcomes of the bulge, physical symptoms, and pain. RESULTS A total of 157 patients (mean age: 67±13 y) with 201 inguinal hernias (mean size: 5.1±5 cm 2 ) were included. Laparoscopic approach and bridging repair were performed in 99.4% of patients. All device location was preperitoneal. No procedure-related adverse events within 30 days were reported. No surgical site infection or SSO events or device-related hernia recurrence occurred through 12 months. Procedure-related serious adverse events occurred in 6 patients; 5 recurrent inguinal hernias (at 1 and 2 y) and 1 scrotal hematoma (at 6 mo). Through 24 months, no SSO events requiring procedural intervention occurred. Through 50 months, 6 (2.98%) patients had confirmed hernia recurrence and 4 (1.99%) patients had hernia reoperation. The patient-reported outcome for pain was reported by 7.9% (10/126) of patients who completed the questionnaire. CONCLUSIONS In this study, inguinal hernia repair with the hybrid composite mesh was successful in most patients and the rate of recurrence was low, further supporting the long-term safety and device performance.
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160
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Baker L, Valadas Marques A, Blum IR. Dental Therapists' Role in the Provision of Aesthetic Dentistry in Dental Practice. Prim Dent J 2023; 12:30-36. [PMID: 37313880 DOI: 10.1177/20501684231178075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Dental therapists have a vital role to play in the provision of dentistry in the UK. This article examines the role of dental therapists in carrying out aesthetic dentistry in the UK dental practice setting. Patient access through collaborative working, especially through a shared care model, referral, and direct access will be discussed. In addition, two clinical cases are presented to demonstrate the provision of aesthetic anterior dental restorations by dental therapists.
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Affiliation(s)
- Linzy Baker
- Linzy Baker Dip DTh Dental Therapist, The One to One Dental Clinic, London, UK
- Arabella Valadas Marques Dip DTh Dental Therapist, Dr Richard Clinics and Heybridge Dental Practice, London, UK
- Igor R. Blum DDS (Hons), PhD, Dr Med Dent, MSc, MFDS RCS (Eng), MFDS RCS (Edin), FDS (Rest Dent) RCS (Eng), FFDRCSI, PGCHE, MA (Educ), FCGDent, FICD, FHEA, LLM (Medico-Legal) Professor, Hon. Consultant and Specialist in Restorative Dentistry, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
| | - Arabella Valadas Marques
- Linzy Baker Dip DTh Dental Therapist, The One to One Dental Clinic, London, UK
- Arabella Valadas Marques Dip DTh Dental Therapist, Dr Richard Clinics and Heybridge Dental Practice, London, UK
- Igor R. Blum DDS (Hons), PhD, Dr Med Dent, MSc, MFDS RCS (Eng), MFDS RCS (Edin), FDS (Rest Dent) RCS (Eng), FFDRCSI, PGCHE, MA (Educ), FCGDent, FICD, FHEA, LLM (Medico-Legal) Professor, Hon. Consultant and Specialist in Restorative Dentistry, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
| | - Igor R Blum
- Linzy Baker Dip DTh Dental Therapist, The One to One Dental Clinic, London, UK
- Arabella Valadas Marques Dip DTh Dental Therapist, Dr Richard Clinics and Heybridge Dental Practice, London, UK
- Igor R. Blum DDS (Hons), PhD, Dr Med Dent, MSc, MFDS RCS (Eng), MFDS RCS (Edin), FDS (Rest Dent) RCS (Eng), FFDRCSI, PGCHE, MA (Educ), FCGDent, FICD, FHEA, LLM (Medico-Legal) Professor, Hon. Consultant and Specialist in Restorative Dentistry, Faculty of Dentistry, Oral and Craniofacial Sciences, King's College London, London, UK
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Pineda-Álvarez RA, Flores-Avila C, Medina-Torres L, Gracia-Mora J, Escobar-Chávez JJ, Leyva-Gómez G, Shahbazi MA, Bernad-Bernad MJ. Laponite Composites: In Situ Films Forming as a Possible Healing Agent. Pharmaceutics 2023; 15:1634. [PMID: 37376082 DOI: 10.3390/pharmaceutics15061634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
A healing material must have desirable characteristics such as maintaining a physiological environment, protective barrier-forming abilities, exudate absorption, easy handling, and non-toxicity. Laponite is a synthetic clay with properties such as swelling, physical crosslinking, rheological stability, and drug entrapment, making it an interesting alternative for developing new dressings. This study evaluated its performance in lecithin/gelatin composites (LGL) as well as with the addition of maltodextrin/sodium ascorbate mixture (LGL MAS). These materials were applied as nanoparticles, dispersed, and prepared by using the gelatin desolvation method-eventually being turned into films via the solvent-casting method. Both types of composites were also studied as dispersions and films. Dynamic Light Scattering (DLS) and rheological techniques were used to characterize the dispersions, while the films' mechanical properties and drug release were determined. Laponite in an amount of 8.8 mg developed the optimal composites, reducing the particulate size and avoiding the agglomeration by its physical crosslinker and amphoteric properties. On the films, it enhanced the swelling and provided stability below 50 °C. Moreover, the study of drug release in maltodextrin and sodium ascorbate from LGL MAS was fitted to first-order and Korsmeyer-Peppas models, respectively. The aforementioned systems represent an interesting, innovative, and promising alternative in the field of healing materials.
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Affiliation(s)
- Ramón Andrés Pineda-Álvarez
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cto. Exterior S/N, Coyoacán, Ciudad de México 04510, Mexico
| | - Carolina Flores-Avila
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cto. Exterior S/N, Coyoacán, Ciudad de México 04510, Mexico
| | - Luis Medina-Torres
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cto. Exterior S/N, Coyoacán, Ciudad de México 04510, Mexico
| | - Jesús Gracia-Mora
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cto. Exterior S/N, Coyoacán, Ciudad de México 04510, Mexico
| | - José Juan Escobar-Chávez
- Facultad de Estudios Superiores Cuautitlán, Unidad de Investigación Multidisciplinaria-L12 (Sistemas Transdérmicos), Universidad Nacional Autónoma de México, Carretera Cuautitlán-Teoloyucan, km 2.5 San Sebastián Xhala, Cuautitlán Izcalli 54714, Mexico
| | - Gerardo Leyva-Gómez
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cto. Exterior S/N, Coyoacán, Ciudad de México 04510, Mexico
| | - Mohammad-Ali Shahbazi
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - María Josefa Bernad-Bernad
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cto. Exterior S/N, Coyoacán, Ciudad de México 04510, Mexico
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162
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Meng X, Cheng Z, Li L. The Promotion of Research Progress of Zinc Manganate Cathode Materials for Zinc-Ion Batteries by Characterization and Analysis Technology. Molecules 2023; 28:molecules28114459. [PMID: 37298934 DOI: 10.3390/molecules28114459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/21/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Zinc-ion batteries (ZIBs) have recently attracted great interest and are regarded as a promising energy storage device due to their low cost, environmental friendliness, and superior safety. However, the development of suitable Zn-ion intercalation cathode materials remains a great challenge, resulting in unsatisfactory ZIBs that cannot meet commercial demands. Considering that spinel-type LiMn2O4 has been shown to be a successful Li intercalation host, spinel-like ZnMn2O4 (ZMO) is expected to be a good candidate for ZIBs cathodes. This paper first introduces the zinc storage mechanism of ZMO and then reviews the promotion of research progress in improving the interlayer spacing, structural stability, and diffusivity of ZMO, including the introduction of different intercalated ions, introduction of defects, and design of different morphologies and in combination with other materials. The development status and future research directions of ZMO-based ZIBs characterization and analysis techniques are summarized.
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Affiliation(s)
- Xin Meng
- Shaanxi Key Laboratory of Industrial Automation, School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China
| | - Ziyi Cheng
- Shaanxi Key Laboratory of Industrial Automation, School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China
| | - Le Li
- Shaanxi Key Laboratory of Industrial Automation, School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, China
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163
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Martelli A, Bellucci D, Cannillo V. Additive Manufacturing of Polymer/Bioactive Glass Scaffolds for Regenerative Medicine: A Review. Polymers (Basel) 2023; 15:polym15112473. [PMID: 37299270 DOI: 10.3390/polym15112473] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/19/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
Tissue engineering (TE) is a branch of regenerative medicine with enormous potential to regenerate damaged tissues using synthetic grafts such as scaffolds. Polymers and bioactive glasses (BGs) are popular materials for scaffold production because of their tunable properties and ability to interact with the body for effective tissue regeneration. Due to their composition and amorphous structure, BGs possess a significant affinity with the recipient's tissue. Additive manufacturing (AM), a method that allows the creation of complex shapes and internal structures, is a promising approach for scaffold production. However, despite the promising results obtained so far, several challenges remain in the field of TE. One critical area for improvement is tailoring the mechanical properties of scaffolds to meet specific tissue requirements. In addition, achieving improved cell viability and controlled degradation of scaffolds is necessary to ensure successful tissue regeneration. This review provides a critical summary of the potential and limitations of polymer/BG scaffold production via AM covering extrusion-, lithography-, and laser-based 3D-printing techniques. The review highlights the importance of addressing the current challenges in TE to develop effective and reliable strategies for tissue regeneration.
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Affiliation(s)
- Andrea Martelli
- Dipartimento di Ingegneria Enzo Ferrari, Università degli Studi di Modena e Reggio Emilia, Via. P. Vivarelli 10, 41125 Modena, Italy
| | - Devis Bellucci
- Dipartimento di Ingegneria Enzo Ferrari, Università degli Studi di Modena e Reggio Emilia, Via. P. Vivarelli 10, 41125 Modena, Italy
| | - Valeria Cannillo
- Dipartimento di Ingegneria Enzo Ferrari, Università degli Studi di Modena e Reggio Emilia, Via. P. Vivarelli 10, 41125 Modena, Italy
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164
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Sundeev R, Shalimova A, Rogachev S, Chernogorova O, Glezer A, Ovcharov A, Karateev I, Tabachkova N. Structural Aspects of the Formation of Multilayer Composites from Dissimilar Materials upon High-Pressure Torsion. Materials (Basel) 2023; 16:ma16103849. [PMID: 37241476 DOI: 10.3390/ma16103849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/30/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023]
Abstract
A multi-metal composite was consolidated from the Ti50Ni25Cu25 and Fe50Ni33B17 alloys by room-temperature high-pressure torsion (HPT). The structural research methods used in this study were X-ray diffractometry, high-resolution transmission electron microscopy, scanning electron microscopy with an electron microprobe analyzer in the mode of backscattered electrons, and the measurement of indentation hardness and modulus of the composite constituents. The structural aspects of the bonding process have been examined. The method of joining materials using their coupled severe plastic deformation has been established to play a leading role in the consolidation of the dissimilar layers upon HPT.
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Affiliation(s)
- Roman Sundeev
- Department of Nanoelectronics, MIREA-Russian Technological University, Vernadskogo Prospect, 78, 119454 Moscow, Russia
- I.P. Bardin Science Institute for Ferrous Metallurgy, Radio Street, 22/9, 105005 Moscow, Russia
- Department of Physical Metallurgy and Physics of Strength, National University of Science and Technology "MISiS", Leninski Prospect, 4, 119049 Moscow, Russia
| | - Anna Shalimova
- I.P. Bardin Science Institute for Ferrous Metallurgy, Radio Street, 22/9, 105005 Moscow, Russia
| | - Stanislav Rogachev
- Department of Physical Metallurgy and Physics of Strength, National University of Science and Technology "MISiS", Leninski Prospect, 4, 119049 Moscow, Russia
- Baikov Institute of Metallurgy and Materials Science RAS, Leninski Prospect, 49, 119334 Moscow, Russia
| | - Olga Chernogorova
- Baikov Institute of Metallurgy and Materials Science RAS, Leninski Prospect, 49, 119334 Moscow, Russia
| | - Alexander Glezer
- I.P. Bardin Science Institute for Ferrous Metallurgy, Radio Street, 22/9, 105005 Moscow, Russia
| | - Alexey Ovcharov
- National Research Centre "Kurchatov Institute", Akademika Kurchatova Square, 1, 123182 Moscow, Russia
| | - Igor Karateev
- National Research Centre "Kurchatov Institute", Akademika Kurchatova Square, 1, 123182 Moscow, Russia
| | - Natalia Tabachkova
- Department of Physical Metallurgy and Physics of Strength, National University of Science and Technology "MISiS", Leninski Prospect, 4, 119049 Moscow, Russia
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165
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Tucci F, Rubino F, Pasquino G, Carlone P. Thermoplastic Pultrusion Process of Polypropylene/Glass Tapes. Polymers (Basel) 2023; 15:polym15102374. [PMID: 37242951 DOI: 10.3390/polym15102374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/13/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
The present work focuses on the pultrusion of pre-impregnated glass-reinforced polypropylene tapes. An appositely designed laboratory-scale pultrusion line, consisting of a heating/forming die and a cooling die, was used. The temperature of the advancing materials and the pulling force resistance were measured by using thermocouples embedded in the pre-preg tapes and a load cell. From the analysis of the experimental outcomes, we gained insight into the nature of the material-machinery interaction and the transitions of the polypropylene matrix. The cross-section of the pultruded part was analyzed by microscope observation to evaluate the distribution of the reinforcement inside the profile and the presence of internal defects. Three-point bending and tensile testing were conducted to assess the mechanical properties of the thermoplastic composite. The pultruded product showed good quality, with an average fiber volume fraction of 23% and a limited presence of internal defects. A non-homogenous distribution of fibers in the cross-section of the profile was observed, probably due to the low number of tapes used in the present experimentation and their limited compaction. A tensile modulus and a flexural modulus of 21.5 GPa and 15.0 GPa, respectively, were measured.
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Affiliation(s)
- Fausto Tucci
- Department of Industrial Engineering, University of Salerno, 84084 Fisciano, Italy
| | - Felice Rubino
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, 03043 Cassino, Italy
| | | | - Pierpaolo Carlone
- Department of Industrial Engineering, University of Salerno, 84084 Fisciano, Italy
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166
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Counihan MJ, Powers DJ, Barai P, Hu S, Zagorac T, Zhou Y, Lee J, Connell JG, Chavan KS, Gilmore IS, Hanley L, Srinivasan V, Zhang Y, Tepavcevic S. Understanding the Influence of Li 7La 3Zr 2O 12 Nanofibers on Critical Current Density and Coulombic Efficiency in Composite Polymer Electrolytes. ACS Appl Mater Interfaces 2023. [PMID: 37204772 DOI: 10.1021/acsami.3c04262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Composite polymer electrolytes (CPEs) are attractive materials for solid-state lithium metal batteries, owing to their high ionic conductivity from ceramic ionic conductors and flexibility from polymer components. As with all lithium metal batteries, however, CPEs face the challenge of dendrite formation and propagation. Not only does this lower the critical current density (CCD) before cell shorting, but the uncontrolled growth of lithium deposits may limit Coulombic efficiency (CE) by creating dead lithium. Here, we present a fundamental study on how the ceramic components of CPEs influence these characteristics. CPE membranes based on poly(ethylene oxide) and lithium bis(trifluoromethanesulfonyl)imide (PEO-LiTFSI) with Li7La3Zr2O12 (LLZO) nanofibers were fabricated with industrially relevant roll-to-roll manufacturing techniques. Galvanostatic cycling with lithium symmetric cells shows that the CCD can be tripled by including 50 wt % LLZO, but half-cell cycling reveals that this comes at the cost of CE. Varying the LLZO loading shows that even a small amount of LLZO drastically lowers the CE, from 88% at 0 wt % LLZO to 77% at just 2 wt % LLZO. Mesoscale modeling reveals that the increase in CCD cannot be explained by an increase in the macroscopic or microscopic stiffness of the electrolyte; only the microstructure of the LLZO nanofibers in the PEO-LiTFSI matrix slows dendrite growth by presenting physical barriers that the dendrites must push or grow around. This tortuous lithium growth mechanism around the LLZO is corroborated with mass spectrometry imaging. This work highlights important elements to consider in the design of CPEs for high-efficiency lithium metal batteries.
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Affiliation(s)
- Michael J Counihan
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Devon J Powers
- Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Pallab Barai
- Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Shiyu Hu
- Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Teodora Zagorac
- Department of Chemistry, University of Illinois Chicago, (MC 111), Chicago, Illinois 60607, United States
| | - Yundong Zhou
- National Physical Laboratory, NiCE-MSI, Teddington, Middlesex TW11 0LW, U.K
| | - Jungkuk Lee
- Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Justin G Connell
- Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Kanchan S Chavan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Ian S Gilmore
- National Physical Laboratory, NiCE-MSI, Teddington, Middlesex TW11 0LW, U.K
| | - Luke Hanley
- Department of Chemistry, University of Illinois Chicago, (MC 111), Chicago, Illinois 60607, United States
| | - Venkat Srinivasan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Yuepeng Zhang
- Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Sanja Tepavcevic
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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167
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Krmela J, Michna M, Růžička Z, Krmelová V, Artyukhov A. Cyclic Testing of Polymer Composites and Textile Cords for Tires. Polymers (Basel) 2023; 15:polym15102358. [PMID: 37242934 DOI: 10.3390/polym15102358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/13/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
This paper is oriented toward the specific testing of polymer composites and textile PA66 cords used as reinforcement for composites. The aim of the research is to validate the proposed new testing methods for low-cyclic testing of polymer composites and PA66 cords for the characterization of material parameters useful as input data for computational tire simulations. Part of the research is the design of experimental methods for polymer composites and test parameters such as load rate, preload, and other parameters such as strain for the start and stop of cycle steps. The DIN 53835-13 standard is used for the conditions of textile cord during the first five cycles. A cyclic load is carried out at two temperatures of 20 °C and 120 °C. The testing method includes a hold step for 60 s between each loop. The video-extensometer technique is used for testing. The paper evaluated the effect of temperatures on the material properties of PA66 cords. The true stress-strain (elongation) dependences between points for the video-extensometer of the fifth cycle of every cycle loop are the data results from composite tests. The forcestrain dependences between points for the video-extensometer are the data results from tests of the PA66 cord. These dependencies can be used as input material data of textile cords in the computational simulation of tire casings using a custom material model definition. The fourth cycle in every cycle loop of polymer composites can be considered a stable cycle because the change in the maximum true stress between the fourth and fifth cycles is 1.6%. Other results of this research include a relationship between stress and the number of cycle loops as the second-degree polynomial curve for polymer composites and a simple relationship to describe the value of the force at each end of the cycles for a textile cord.
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Affiliation(s)
- Jan Krmela
- Faculty of Mechanical Engineering, Jan Evangelista Purkyně University in Ustí nad Labem, 400 96 Ustí nad Labem, Czech Republic
| | - Michal Michna
- Faculty of Mechanical Engineering, Jan Evangelista Purkyně University in Ustí nad Labem, 400 96 Ustí nad Labem, Czech Republic
| | - Zdeněk Růžička
- Faculty of Mechanical Engineering, Jan Evangelista Purkyně University in Ustí nad Labem, 400 96 Ustí nad Labem, Czech Republic
| | - Vladimíra Krmelová
- Faculty of Industrial Technologies in Púchov, Alexander Dubček University of Trenčín, 020 01 Púchov, Slovakia
| | - Artem Artyukhov
- Academic and Research Institute of Business, Economics and Management, Sumy State University, 40007 Sumy, Ukraine
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168
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Vázquez-Rodríguez F, Elizondo N, Montes-González M, Gómez-Rodríguez C, González-Carranza Y, Guzmán AM, Rodríguez EA. Microstructural and Mechanical Characteristics of Alkali-Activated Binders Composed of Milled Fly Ash and Granulated Blast Furnace Slag with µ-Limestone Addition. Materials (Basel) 2023; 16:ma16103818. [PMID: 37241446 DOI: 10.3390/ma16103818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/20/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023]
Abstract
Concrete is the most used construction material, needing large quantities of Portland cement. Unfortunately, Ordinary Portland Cement production is one of the main generators of CO2, which pollutes the atmosphere. Today, geopolymers are an emerging building material generated by the chemical activity of inorganic molecules without the Portland Cement addition. The most common alternative cementitious agents used in the cement industry are blast-furnace slag and fly ash. In the present work, the effect of 5 wt.% µ-limestone in mixtures of granulated blast-furnace slag and fly ash activated with sodium hydroxide (NaOH) at different concentrations was studied to evaluate the physical properties in the fresh and hardened states. The effect of µ-limestone was explored through XRD, SEM-EDS, atomic absorption, etc. The addition of µ-limestone increased the compressive strength reported values from 20 to 45 MPa at 28 days. It was found by atomic absorption that the CaCO3 of the μ-limestone dissolved in NaOH, precipitating Ca(OH)2 as the reaction product. SEM-EDS analysis showed a chemical interaction between C-A-S-H- and N-A-S-H-type gels with Ca(OH)2, forming (N, C)A-S-H- and C-(N)-A-S-H-type gels, improving mechanical performance and microstructural properties. The addition of μ-limestone appeared like a promising and cheap alternative for enhancing the properties of low-molarity alkaline cement since it helped exceed the 20 MPa strength recommended by current regulations for conventional cement.
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Affiliation(s)
- Francisco Vázquez-Rodríguez
- Programa Doctoral en Ingeniería Física, Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza 66450, Nuevo León, Mexico
- Facultad de Arquitectura (FARQ), Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza 66450, Nuevo León, Mexico
| | - Nora Elizondo
- Programa Doctoral en Ingeniería Física, Facultad de Ciencias Físico Matemáticas (FCFM), Universidad Autónoma de Nuevo León (UANL), San Nicolás de los Garza 66450, Nuevo León, Mexico
| | - Myriam Montes-González
- Consejo Superior de Investigaciones Científicas, Instituto de Ciencias de la Construcción Eduardo Torroja, C/Serrano Galvache 4, 28002 Madrid, Spain
| | | | - Yadira González-Carranza
- Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León, Av. Pedro de Alba S/N, San Nicolás de los Garza 66450, Nuevo León, Mexico
| | - Ana M Guzmán
- Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León, Av. Pedro de Alba S/N, San Nicolás de los Garza 66450, Nuevo León, Mexico
| | - Edén A Rodríguez
- Facultad de Ingeniería Mecánica y Eléctrica (FIME), Universidad Autónoma de Nuevo León, Av. Pedro de Alba S/N, San Nicolás de los Garza 66450, Nuevo León, Mexico
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169
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Astanina A, Koivisto JT, Hannula M, Salminen T, Kellomäki M, Massera J. Chemical interactions in composites of gellan gum and bioactive glass: self-crosslinking and in vitro dissolution. Front Chem 2023; 11:1133374. [PMID: 37252370 PMCID: PMC10213777 DOI: 10.3389/fchem.2023.1133374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 04/17/2023] [Indexed: 05/31/2023] Open
Abstract
We investigated the interactions between the organic-inorganic phases in composites and the impact on in vitro dissolution. The composite consists of a hydrogel-forming polysaccharide gellan gum (GG, organic phase) and a borosilicate bioactive glass (BAG, inorganic phase). The BAG loading in the gellan gum matrix varied from 10 to 50 wt%. While mixing GG and BAG, the ions released from BAG microparticles crosslinked with the carboxylate anions of GG. The nature of the crosslinking was assessed, and its impact on mechanical properties, swelling ratio, and enzymatic degradation profile upon immersion for up to 2 weeks was studied. Loading up to 30 wt% of BAG in GG caused an increase in mechanical properties associated with an increasing crosslinking density. At higher BAG loading, excess divalent ions and percolation of particles led to a decrease in the fracture strength and compressive modulus. Upon immersion, a decrease in the composite mechanical properties was attributed to the dissolution of the BAG and the loosening of the glass/matrix interface. The enzymatic degradation of the composites was inhibited at higher BAG loadings (40 and 50 wt%) even when the specimen was immersed for 48 h in PBS buffer with lysozyme. During in vitro dissolution in both SBF and PBS, the ions released from the glass led to the precipitation of hydroxyapatite already at day 7. In conclusion, we thoroughly discussed the in vitro stability of the GG/BAG composite and established the maximum BAG loading to enhance the GG crosslinking and mechanical properties. Based on this study, 30, 40, and 50 wt% of BAG in GG will be further investigated in an in vitro cell culture study.
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Affiliation(s)
- A. Astanina
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - J. T. Koivisto
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Division of Pathology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - M. Hannula
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - T. Salminen
- Tampere Microscopy Center, Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
| | - M. Kellomäki
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - J. Massera
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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170
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Wang W, Han S, Li N, Song Y, Chen L, Liu C, Zhang S, Wang Z. High-performance electrode of ZIF-67 metal-organic framework (MOF) loaded laser-induced graphene (LIG) composite for all-solid-state supercapacitor. Nanotechnology 2023; 34. [PMID: 37171102 DOI: 10.1088/1361-6528/acd00b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 04/25/2023] [Indexed: 05/13/2023]
Abstract
This work demonstrates a facile and efficient methodology to synthesize a composite material of zeolitic imidazolate frameworks (ZIFs) and laser-induced graphene (LIG). This ZIF-67 loaded LIG composite (ZIF-67/LIG) has been adequately characterized for its morphology and structure, and its electrochemical performance has been specifically examined. As supercapacitors (SCs) electrode material, the ZIF-67/LIG composite exhibits superb electrochemical performance, owing to the inherent high porosity, abundant active sites, large specific surface area of ZIF-67, and the excellent conductive three-dimensional hierarchical porous network structure provided by LIG. In three-electrode system, ZIF-67/LIG composite electrode displays outstanding areal specific capacitance (CA) of 135.6 mF cm-2at a current density of 1 mA cm-2with 1 M Na2SO4aqueous electrolyte, which is far greater than that of pristine LIG (7.7 mF cm-2). Furthermore, the ZIF-67/LIG composite has been fabricated into an all-solid-state planar micro-supercapacitor (MSC). This ZIF-67/LIG MSC exhibits an impressiveCAof 38.1 mF cm-2at a current density of 0.20 mA cm-2, a good cycling stability of 80.3% capacitance retention after 3000 cycles, and a high energy density of 5.29μWh cm-2at a power density of 0.1 mW cm-2. All electrochemical results clearly manifest that as-prepared ZIF-67/LIG composite can be a candidate in energy storage field with exciting possibilities.
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Affiliation(s)
- Wenbo Wang
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, People's Republic of China
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
| | - Shuai Han
- School of Mathematics and Physics, Hebei University of Engineering, Handan 056038, Hebei, People's Republic of China
| | - Nian Li
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
| | - Yanping Song
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, People's Republic of China
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
| | - Liqing Chen
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, People's Republic of China
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
| | - Cui Liu
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
| | - Shudong Zhang
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
| | - Zhenyang Wang
- Institute of Solid State Physics, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, People's Republic of China
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171
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Alsaleh NA, Ataya S, Latief FH, Ahmed MMZ, Ataya A, Abdul-Latif A. LCF and HCF of Short Carbon Fibers Reinforced AE42 Mg Alloy. Materials (Basel) 2023; 16:ma16103686. [PMID: 37241313 DOI: 10.3390/ma16103686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Abstract
Lightweight magnesium alloys and magnesium matrix composites have recently become more widespread for high-efficiency applications, including automobile, aerospace, defense, and electronic industries. Cast magnesium and magnesium matrix composites are applied in many highly moving and rotating parts, these parts can suffer from fatigue loading and are consequently subjected to fatigue failure. Reversed tensile-compression low-cycle fatigue (LCF) and high-cycle fatigue (HCF) of short fibers reinforced and unreinforced AE42 have been studied at temperatures of 20 °C, 150 °C, and 250 °C. To select suitable fatigue testing conditions, tensile tests have been carried out on AE42 and the composite material AE42-C at temperatures of up to 300 °C. The Wohler curves σa (NF) have shown that the fatigue strength of the reinforced AE42-C in the HCF range was double that of unreinforced AE42. In the LCF range at certain strain amplitudes, the fatigue life of the composite materials is much less than that of the matrix alloys, this is due to the low ductility of this composite material. Furthermore, a slight temperature influence up to 150 °C has been established on the fatigue behavior of the AE42-C. The fatigue life curves Δεtotal (NF) were described using the Basquin and Manson-Coffin approaches. Fracture surface investigations showed a mixed mode of serration fatigue pattern on the matrix and carbon fibers fracturing and debonding from the matrix alloy.
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Affiliation(s)
- Naser A Alsaleh
- Department of Mechanical Engineering, College of Engineering, Imam Mohammad Ibn Saud Islamic University, Riyadh 11432, Saudi Arabia
| | - Sabbah Ataya
- Department of Mechanical Engineering, College of Engineering, Imam Mohammad Ibn Saud Islamic University, Riyadh 11432, Saudi Arabia
- Department of Metallurgical and Materials Engineering, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43512, Egypt
| | - Fahamsyah H Latief
- Department of Mechanical Engineering, Faculty of Engineering and Science, Universitas Nasional, Jakarta 12520, Indonesia
| | - Mohamed M Z Ahmed
- Department of Mechanical Engineering, College of Engineering at Al Kharj, Prince Sattam bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Ahmed Ataya
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Akrum Abdul-Latif
- Université Paris 8, IUT de Tremblay, 93290 Tremblay-en-France, France
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172
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Chen Y, Zhang Z, Cao C, Wang S, Xu G, Chen Y, Liu J. Experimental Study of Mechanical Properties and Failure Characteristics of Coal-Rock-like Composite Based on 3D Printing Technology. Materials (Basel) 2023; 16:ma16103681. [PMID: 37241309 DOI: 10.3390/ma16103681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/13/2023] [Accepted: 04/19/2023] [Indexed: 05/28/2023]
Abstract
Coal contains cracks and has strong heterogeneity, so the data dispersion is large in laboratory tests. In this study, 3D printing technology is used to simulate hard rock and coal, and the rock mechanics test method is used to carry out the coal-rock combination experiment. The deformation characteristics and failure modes of the combination are analyzed and compared with the relevant parameters of the single body. The results show that the uniaxial compressive strength of the composite sample is inversely proportional to the thickness of the weak body and directly proportional to the thickness of the strong body. The Protodyakonov model or ASTM model can be used as a verification method for the results of a uniaxial compressive strength test of coal-rock combination. The elastic modulus of the combination is the equivalent elastic modulus, and the elastic modulus of the combination is between the elastic modulus of the two constituent monomers, which can be analyzed using the Reuss model. The failure of the composite sample occurs in the low-strength material, while the high-strength section is rebounding as an extra load on the low-strength body, which may cause a sharp increase in the strain rate of the weak body. The main failure mode of the sample with a small height-diameter ratio is splitting, and the failure mode of the sample with a large height-diameter ratio is shear fracturing. When the height-diameter ratio is not greater than 1, it shows pure splitting, and when the height-diameter ratio is 1~2, it shows a mixed mode of splitting and shear fracture. The shape has a significant effect on the uniaxial compressive strength of the composite specimen. For the impact propensity, it can be determined that the uniaxial compressive strength of the combination is higher than that of the single body, and the dynamic failure time is lower than that of the single body. It can hardly determine the elastic energy and the impact energy of the composite with the relationship to the weak body. The proposed methodology provides new cutting-edge test technologies in the study of coal and coal-like materials, with an exploration of their mechanical properties under compression.
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Affiliation(s)
- Ying Chen
- College of Mining, Liaoning Technical University, Fuxin 123008, China
| | - Zikai Zhang
- College of Mining, Liaoning Technical University, Fuxin 123008, China
| | - Chen Cao
- College of Mining, Liaoning Technical University, Fuxin 123008, China
| | - Shuai Wang
- College of Mining, Liaoning Technical University, Fuxin 123008, China
| | - Guangyuan Xu
- College of Mining, Liaoning Technical University, Fuxin 123008, China
| | - Yang Chen
- Research Center for Rock Burst Control, Shandong Energy Group Co., Ltd., Jinan 250014, China
| | - Jinliang Liu
- Huafeng Coal Mine, Xinwen Mining Group Co., Ltd., Tai'an 271413, China
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173
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Bai H, Tao K, Yan Z, Zhan X, Zhang H, Han T, Liu J, Li J. A pyramidal metal organic frameworks-derived FeP@CoP aluminium-ion battery cathode displaying low-temperature tolerance and fast electron transfer kinetics. Chemistry 2023:e202301127. [PMID: 37163458 DOI: 10.1002/chem.202301127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 05/12/2023]
Abstract
Engineering appropriate cathode materials is significant for the development of high-performance aluminum-ion (Al-ion) batteries. Here, a pyramidal metal organic frameworks (MOFs)-derived FeP@CoP composite is developed as cathode, which exhibits good stability and high capacity. FeP@CoP cathode remains a high capacity of 168 mAh g-1 after 200 cycles, and displays a stable rate-performance at both room and low temperatures of -10 °C. After three rounds of rate-performance cycling, the FeP@CoP composite recovers 178.2 mAh g-1 at 0.3 A g-1. Moreover, density functional theory (DFT) calculations verify improved electron-transfer kinetics with narrowed band gap and enhanced density of states. Those findings would inspire a broad set of studies on MOFs-derived composites for high-performance secondary batteries.
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Affiliation(s)
- Haiyuan Bai
- Anhui Normal University, College of Chemistry and Materials Science, CHINA
| | - Kehao Tao
- Shanghai Jiao Tong University, Department of Micro/Nano-electronics, CHINA
| | - Zicong Yan
- Wuhu ETC Battery Ltd, Division of Batteries, CHINA
| | - Xinju Zhan
- Wuhu ETC Battery Ltd, Division of Batteries, CHINA
| | - Huigang Zhang
- Institute of Process Engineering Chinese Academy of Sciences, State Key Laboratory of Multiphase Complex Systems, CHINA
| | - Tianli Han
- Anhui Normal University, College of Chemistry and Materials Science, CHINA
| | - Jinyun Liu
- Institute of Intelligent Machines, Chinese Academy of Sciences, Center for Functional Solids, Science Island, 241002, Hefei, CHINA
| | - Jinjin Li
- Shanghai Jiao Tong University, Department of Micro/Nano-electronics, CHINA
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174
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Joch R, Šajgalík M, Drbúl M, Holubják J, Czán A, Bechný V, Matúš M. The Application of Additive Composites Technologies for Clamping and Manipulation Devices in the Production Process. Materials (Basel) 2023; 16:ma16103624. [PMID: 37241252 DOI: 10.3390/ma16103624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023]
Abstract
Additive technologies have been widely adopted in various industries. The choice of additive technology and material directly affects the functionality of the manufactured components. The development of materials with better mechanical properties has led to a growing interest in replacing traditional metal components with those manufactured using additive technologies. The application of Onyx as a material comes into consideration, which contains short carbon fibers to increase the mechanical properties. This study aims to experimentally verify the viability of substituting metal gripping elements with nylon and composite materials. The design of the jaws was customized to meet the requirements of a three-jaw chuck of a CNC machining center. The evaluation process involved monitoring the functionality and deformation effects on the clamped PTFE polymer material. When the metal jaws were applied, significant deformation of the clamped material occurred, which varied with the clamping pressure. This deformation was evidenced by the formation of spreading cracks on the clamped material and permanent shape changes in the tested material. Conversely, nylon and composite jaws manufactured using additive technology demonstrated functionality across all tested clamping pressures, without causing permanent deformation of the clamped material, unlike the traditional metal jaws. The results of this study confirm the applicability of the Onyx material and provide practical evidence of the potential for reducing deformation caused by clamping mechanisms.
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Affiliation(s)
- Richard Joch
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
| | - Michal Šajgalík
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
| | - Mário Drbúl
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
| | - Jozef Holubják
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
| | - Andrej Czán
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
| | - Vladimír Bechný
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
| | - Miroslav Matúš
- Department of Machining and Manufacturing Technology, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 010 26 Žilina, Slovakia
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175
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Zeng X, Ding Y, Bai H, Ding Q, Lin X, Liu J, Sun MZ. Rational engineering NiMoO4 nanosheets or Mn3O4 nanowires on Fe2O3 microdiscs as novel hierarchical anodes for high-performance lithium-ion batteries. Nanotechnology 2023; 34. [PMID: 37146591 DOI: 10.1088/1361-6528/acd2e0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/04/2023] [Indexed: 05/07/2023]
Abstract
Since current graphite-based lithium-ion battery anode has a low theoretical capacity, the development of high-performance lithium-ion battery is severely restricted. Here, novel hierarchical composites composing of microdisc and the secondarily grown nanosheets and nanowires are developed, taking NiMoO4 nanosheets and Mn3O4 nanowires growing on Fe2O3 microdiscs as demonstrating examples. The growth processes of the hierarchical structures have been investigated by adjusting a series of preparation conditions. The morphologies and structures have been characterized by using scanning electron microscopy, transmission electron microscope and X-ray diffraction. Fe2O3@Mn3O4 composite-based anode displays a capacity of 713 mAh g-1 after 100 cycles at 0.5 A g-1 with a high Coulombic efficiency. A good rate-performance is also achieved. Fe2O3@NiMoO4 anode delivers 539 mAh g-1 after 100 cycles at 0.5 A g-1, which is obviously higher than that of pure Fe2O3. The hierarchical structure is conducive to improve the transport of electrons and ions, and provide numerous active sites, thus significantly enhancing the electrochemical performance. Moreover, the electron transfer performance is investigated by using density functional theory calculations. It is expected the findings presented here and the rational engineering of nanosheets/nanowires on microdiscs would be applicable for developing many other high-performance energy-storage composites.
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Affiliation(s)
- Xiangbing Zeng
- School of Materials Science and Engineering, Southeast University, 2# Sipailou, Xuanwu district, Nanjing, 210096, CHINA
| | - Yingyi Ding
- College of Chemistry and Materials Science, Anhui Normal University, 189#, Jiuhua Rd, Wuhu, Anhui, 241000, CHINA
| | - Haiyuan Bai
- College of Chemistry and Materials Science, Anhui Normal University, 189#, Jiuhua Rd, Wuhu, Anhui, 241000, CHINA
| | - Qian Ding
- College of Chemistry and Materials Science, Anhui Normal University, 189#, Jiuhua Rd, Wuhu, Anhui, 241000, CHINA
| | - Xirong Lin
- Department of Micro/Nano-electronics, Shanghai Jiao Tong University, 300# Dongchun Rd, Shanghai, 200240, CHINA
| | - Jinyun Liu
- Chinese Academy of Sciences Institute of Intelligent Machines, Science Island 1130 M B, Hefei, Anhui, 230031, CHINA
| | - Ming Zheng Sun
- School of Materials Science and Engineering, Southeast University, 2# Sipailou, Xuanwu district, Nanjing, 210096, CHINA
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176
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Salim MG, Vasudevan V, Schulman N, Zamani S, Kersey KD, Joshi Y, AlAmer M, Choi JI, Jang SS, Joo YL. Thermoresponsive Conductivity of Graphene-Based Fibers. Small 2023; 19:e2204981. [PMID: 36828800 DOI: 10.1002/smll.202204981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 02/07/2023] [Indexed: 05/18/2023]
Abstract
Smart materials are versatile material systems which exhibit a measurable response to external stimuli. Recently, smart material systems have been developed which incorporate graphene in order to share on its various advantageous properties, such as mechanical strength, electrical conductivity, and thermal conductivity as well as to achieve unique stimuli-dependent responses. Here, a graphene fiber-based smart material that exhibits reversible electrical conductivity switching at a relatively low temperature (60 °C), is reported. Using molecular dynamics (MD) simulation and density functional theory-based non-equilibrium Green's function (DFT-NEGF) approach, it is revealed that this thermo-response behavior is due to the change in configuration of amphiphilic triblock dispersant molecules occurring in the graphene fiber during heating or cooling. These conformational changes alter the total number of graphene-graphene contacts within the composite material system, and thus the electrical conductivity as well. Additionally, this graphene fiber fabrication approach uses a scalable, facile, water-based method, that makes it easy to modify material composition ratios. In all, this work represents an important step forward to enable complete functional tuning of graphene-based smart materials at the nanoscale while increasing commercialization viability.
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Affiliation(s)
- Muhammad G Salim
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Vaibhav Vasudevan
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Nicholas Schulman
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Somayeh Zamani
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Kyle D Kersey
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Yash Joshi
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Mohammed AlAmer
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Ji Il Choi
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Seung Soon Jang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Yong Lak Joo
- Robert Fredrick Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14853, USA
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177
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Guo X, Liu L, Feng H, Li D, Xia Z, Yang R. Flame Retardancy of Nylon 6 Fibers: A Review. Polymers (Basel) 2023; 15:polym15092161. [PMID: 37177307 PMCID: PMC10181247 DOI: 10.3390/polym15092161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023] Open
Abstract
As synthetic fibers with superior performances, nylon 6 fibers are widely used in many fields. Due to the potential fire hazard caused by flammability, the study of the flame retardancy of nylon 6 fibers has been attracting more and more attention. The review has summarized the present research status of flame-retarded nylon 6 fibers from three aspects: intrinsic flame-retarded nylon 6, nylon 6 composites, and surface strategies of nylon 6 fibers/fabrics. The current main focus is still how to balance the application performances, flame retardancy, and production cost. Moreover, melt dripping during combustion remains a key challenge for nylon 6 fibers, and the further developing trend is to study novel flame retardants and new flame-retardancy technologies for nylon 6 fibers.
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Affiliation(s)
- Xiaocheng Guo
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Linjing Liu
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
- Kingfa Sci. & Tech. Co., Ltd., Guangzhou 510663, China
| | - Haisheng Feng
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Dinghua Li
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Zhonghua Xia
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Rongjie Yang
- National Engineering Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
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178
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Schelleis C, Scheuring BM, Liebig WV, Hrymak AN, Henning F. Approaching Polycarbonate as an LFT-D Material: Processing and Mechanical Properties. Polymers (Basel) 2023; 15:polym15092041. [PMID: 37177191 PMCID: PMC10180979 DOI: 10.3390/polym15092041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
Long-fiber thermoplastic (LFT) materials compounded via the direct LFT (LFT-D) process are very versatile composites in which polymers and continuous reinforcement fiber can be combined in almost any way. Polycarbonate (PC) as an amorphous thermoplastic matrix system reinforced with glass fibers (GFs) is a promising addition regarding the current development needs, for example battery enclosures for electromobility. Two approaches to the processing and compression molding of PC GF LFT-D materials with various parameter combinations of screw speed and fiber rovings are presented. The resulting fiber lengths averaged around 0.5 mm for all settings. The tensile, bending, Charpy, and impact properties were characterized and discussed in detail. Special attention to the characteristic charge and flow area formed by compression molding of LFT-D materials, as well as sample orientation was given. The tensile modulus was 10 GPa, while the strength surpassed 125 MPa. The flexural modulus can reach up to 11 GPa, and the flexural strength reached up to 216 MPa. PC GF LFT-D is a viable addition to the LFT-D process, exhibiting good mechanical properties and stable processability.
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Affiliation(s)
- Christoph Schelleis
- Polymer Engineering, Fraunhofer Institute for Chemical Technology ICT, 76327 Pfinztal, Germany
- Lightweight Design, Institute of Vehicle Systems Technology, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - Benedikt M Scheuring
- Hybrid and Lightweight Materials, Institute for Applied Materials, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - Wilfried V Liebig
- Hybrid and Lightweight Materials, Institute for Applied Materials, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - Andrew N Hrymak
- Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 3K7, Canada
| | - Frank Henning
- Polymer Engineering, Fraunhofer Institute for Chemical Technology ICT, 76327 Pfinztal, Germany
- Lightweight Design, Institute of Vehicle Systems Technology, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
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179
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Tao Y, Du J, Cheng Y, Lu J, Min D, Wang H. Advances in Application of Cellulose-MOF Composites in Aquatic Environmental Treatment: Remediation and Regeneration. Int J Mol Sci 2023; 24:ijms24097744. [PMID: 37175452 PMCID: PMC10177928 DOI: 10.3390/ijms24097744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
Metal organic frameworks (MOFs) have gained remarkable interest in water treatment due to their fascinating characteristics, such as tunable functionality, large specific surface area, customizable pore size and porosity, and good chemical and thermal stability. However, MOF particles tend to easily agglomerate in nanoscale, thus decreasing their activity and processing convenience. It is necessary to shape MOF nanocrystals into maneuverable structures. The in situ growth or ex situ incorporation of MOFs into inexpensive and abundant cellulose-family materials can be effective strategies for the stabilization of these MOF species, and therefore can make available a range of enhanced properties that expand the industrial application possibilities of cellulose and MOFs. This paper provides a review of studies on recent advances in the application of multi-dimensional MOF-cellulose composites (e.g., aerogels, membranes, and bulk materials) in wastewater remediation (e.g., metals, dyes, drugs, antibiotics, pesticides, and oils) and water regeneration by adsorption, photo- or chemocatalysis, and membrane separation strategies. The advantages brought about by combining MOFs and cellulose are described, and the performance of MOF-cellulose is described and compared to its counterparts. The mechanisms of relative MOF-cellulose materials in processing aquatic pollutants are included. Existing challenges and perspectives for future research are proposed.
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Affiliation(s)
- Yehan Tao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jian Du
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yi Cheng
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jie Lu
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Douyong Min
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Haisong Wang
- Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
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180
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Hofmann M, Amend S, Lücker S, Frankenberger R, Wöstmann B, Krämer N. Marginal Quality and Wear of Bulk-fill Materials for Class-II Restorations in Primary Molars. J Adhes Dent 2023; 25:107-116. [PMID: 37097056 DOI: 10.3290/j.jad.b4051483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
PURPOSE The aim of this in-vitro study was to evaluate the marginal integrity and wear of eight bulk-fill materials in comparison to a compomer in Class-II cavities in primary molars after thermomechanical loading (TML). MATERIALS AND METHODS Prepared Class-II cavities in 72 extracted primary molars were filled with eight bulk-fill materials. A compomer served as the control group. After water storage (incubator, 28 days, 37°C), samples were subjected to TML (2500 thermal cycles 5°C/55°C; 100,000 load cycles, 50 N, 1.67 Hz). Before and after TML, replicas were made which were used for both SEM analysis of marginal integrity and 3-D wear analysis. Statistical analysis was performed using Kruskal-Wallis and Wilcoxon tests (p < 0.05). RESULTS A significant reduction in perfect margins was observed for all groups, while marginal gap formation increased (Wilcoxon test, p < 0.02) for all groups but the compomer. Significant interindividual differences were observed between the tested materials regarding marginal integrity (Kruskal-Wallis test, p < 0.05). Wear analysis revealed no significant differences between groups (Kruskal-Wallis test, p > 0.05). CONCLUSION Some of the bulk-fill materials investigated here achieved better results than the compomer and should be further evaluated clinically.
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Wildemann V, Staroverov O, Strungar E, Mugatarov A, Kuchukov A. Mechanical Properties Degradation of Fiberglass Tubes during Biaxial Proportional Cyclic Loading. Polymers (Basel) 2023; 15:polym15092017. [PMID: 37177165 PMCID: PMC10180879 DOI: 10.3390/polym15092017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
Composite structures during an operation are subjected to various types of external loading (impact, vibration, cyclic, etc.), which may lead to a decrease in mechanical properties. Previously, many experimental investigations of the mechanical behavior of composites under uniaxial cyclic loading were carried out. Acquisition of new data on the reduction of composite materials' mechanical characteristics under conditions of multiaxial cyclic loading, as well as verification of existing models for calculation of the residual properties, are relevant. Therefore, this work is devoted to the experimental investigation of the mechanical behavior of fiberglass tubes under proportional cyclic loading. Static and fatigue tests were carried out under tension with torsion conditions. Inhomogeneous strain fields were obtained using a non-contact optical video system VIC-3D. The structural damage accumulation processes were analyzed by an AMSY-6 acoustic emission signals recording system. Surface defects were determined using a DinoLite microscope. Residual dynamic elastic modules were calculated during fatigue tests, and fatigue sensitivity curves were built. Data was approximated using various models, and their high descriptive capability was revealed. Damage accumulation stages were determined. The dependence of the models' parameters on a stress state were observed. It was concluded that multiaxial cyclic loading leads to a significant decrease in mechanical properties, which should be taken into account in composite structure design.
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Affiliation(s)
- Valeriy Wildemann
- Center of Experimental Mechanics, Perm National Research Polytechnic University, 614990 Perm, Russia
| | - Oleg Staroverov
- Center of Experimental Mechanics, Perm National Research Polytechnic University, 614990 Perm, Russia
| | - Elena Strungar
- Center of Experimental Mechanics, Perm National Research Polytechnic University, 614990 Perm, Russia
| | - Artur Mugatarov
- Center of Experimental Mechanics, Perm National Research Polytechnic University, 614990 Perm, Russia
| | - Artur Kuchukov
- Center of Experimental Mechanics, Perm National Research Polytechnic University, 614990 Perm, Russia
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182
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Rudayni HA, Shemy MH, Aladwani M, Alneghery LM, Abu-Taweel GM, Allam AA, Abukhadra MR, Bellucci S. Synthesis and Biological Activity Evaluations of Green ZnO-Decorated Acid-Activated Bentonite-Mediated Curcumin Extract (ZnO@CU/BE) as Antioxidant and Antidiabetic Agents. J Funct Biomater 2023; 14:jfb14040198. [PMID: 37103288 PMCID: PMC10146122 DOI: 10.3390/jfb14040198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/01/2023] [Accepted: 03/07/2023] [Indexed: 04/28/2023] Open
Abstract
Green ZnO-decorated acid-activated bentonite-mediated curcumin extract (ZnO@CU/BE) was prepared as a multifunctional antioxidant and antidiabetic agent based on the extract of curcumin, which was used as a reducing and capping reagent. ZnO@CU/BE showed notably enhanced antioxidant properties against nitric oxide (88.6 ± 1.58%), 1,1-diphenyl-2-picrylhydrazil (90.2 ± 1.76%), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (87.3 ± 1.61%), and superoxide (39.5 ± 1.12%) radicals. These percentages are higher than the reported values of ascorbic acid as a standard and the integrated components of the structure (CU, BE/CU, and ZnO). This signifies the impact of the bentonite substrate on enhancing the solubility, stability, dispersion, and release rate of the intercalated curcumin-based phytochemicals, in addition to enhancing the exposure interface of ZnO nanoparticles. Therefore, effective antidiabetic properties were observed, with significant inhibition effects on porcine pancreatic α-amylase (76.8 ± 1.87%), murine pancreatic α-amylase (56.5 ± 1.67%), pancreatic α-glucosidase (96.5 ± 1.07%), murine intestinal α-glucosidase (92.5 ± 1.10%), and amyloglucosidase (93.7 ± 1.55%) enzymes. These values are higher than those determined using commercial miglitol and are close to the values measured using acarbose. Hence, the structure can be applied as an antioxidant and antidiabetic agent.
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Affiliation(s)
- Hassan Ahmed Rudayni
- Department of Biology, College of Science, Imam Muhammad bin Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Marwa H Shemy
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 65211, Egypt
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65214, Egypt
| | - Malak Aladwani
- Department of Biology, College of Science, Imam Muhammad bin Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Lina M Alneghery
- Department of Biology, College of Science, Imam Muhammad bin Saud Islamic University, Riyadh 11623, Saudi Arabia
| | - Gasem M Abu-Taweel
- Department of Biology, College of Science, Jazan University, P.O. Box 2079, Jazan 45142, Saudi Arabia
| | - Ahmed A Allam
- Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Mostafa R Abukhadra
- Materials Technologies and Their Applications Lab, Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65214, Egypt
- Geology Department, Faculty of Science, Beni-Suef University, Beni-Suef 65214, Egypt
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati, Via. E. Fermi 54, 00044 Frascati, Italy
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Takeda K, Kimura H, Faudree MC, Uchida HT, Sagawa K, Miura E, Salvia M, Nishi Y. A New Strengthening Process for Carbon-Fiber-Reinforced Thermoplastic Polyphenylene Sulfide (CFRTP-PPS) Interlayered Composite by Electron Beam Irradiation to PPS Prior to Lamination Assembly and Hot Press. Materials (Basel) 2023; 16:2823. [PMID: 37049117 PMCID: PMC10095844 DOI: 10.3390/ma16072823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/18/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
Impact by hailstone, volcanic rock, bird strike, or also dropping tools can cause damage to aircraft materials. For maximum safety, the goal is to increase Charpy impact strength (auc) of a carbon-fiber-reinforced thermoplastic polyphenylene sulfide polymer (CFRTP-PPS) composite for potential application to commercial aircraft parts. The layup was three cross-weave CF plies alternating between four PPS plies, [PPS-CF-PPS-CF-PPS-CF-PPS], designated [PPS]4[CF]3. To strengthen, a new process for CFRP-PPS was employed applying homogeneous low voltage electron beam irradiation (HLEBI) to both sides of PPS plies prior to lamination assembly with untreated CF, followed by hot press under 4.0 MPa at 573 K for 8 min. Experimental results showed a 5 kGy HLEBI dose was at or near optimum, increasing auc at each accumulative probability, Pf. Optical microscopy of 5 kGy sample showed a reduction in main crack width with significantly reduced CF separation and pull-out; while, scanning electron microscopy (SEM) and electron dispersive X-ray (EDS) mapping showed PPS adhering to CF. Electron spin resonance (ESR) of a 5 kGy sample indicated lengthening of PPS chains as evidenced by a reduction in dangling bond peak. It Is assumed that 5 kGy HLEBI creates strong bonds at the interface while strengthening the PPS bulk. A model is proposed to illustrate the possible strengthening mechanism.
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Affiliation(s)
- Keisuke Takeda
- Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan
| | - Hideki Kimura
- Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan
- Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan
| | - Michael C. Faudree
- Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan
- Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan
- Faculty of Liberal Arts and Science, Tokyo City University, Yokohama 224-8551, Japan
| | | | - Kohei Sagawa
- Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan
| | - Eiichi Miura
- Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), Ebina 243-0435, Japan
| | - Michelle Salvia
- Laboratory of Tribology and Dynamics of Systems (LTDS), Ecole Centrale de Lyon, 69134 Ecully, CEDEX, France
| | - Yoshitake Nishi
- Graduate School of Engineering, Tokai University, Hiratsuka 259-1292, Japan
- Graduate School of Science & Technology, Tokai University, Hiratsuka 259-1292, Japan
- Kanagawa Institute of Industrial Science and Technology (KISTEC), Ebina 243-0435, Japan
- Laboratory of Tribology and Dynamics of Systems (LTDS), Ecole Centrale de Lyon, 69134 Ecully, CEDEX, France
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Wang R, Qian C, Zhang Z, Shen H, Xia J, Cui D, Sun K, Liu H, Guo C, Yu F, Li J, Bao W. Advance of Prussian Blue-Derived Nanohybrids in Energy Storage: Current Status and Perspective. Small 2023; 19:e2206848. [PMID: 36604991 DOI: 10.1002/smll.202206848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Great changes have occurred in the energy storage area in recent years as a result of rapid economic expansion. People have conducted substantial research on sustainable energy conversion and storage systems in order to mitigate the looming energy crisis. As a result, developing energy storage materials is critical. Materials with an open frame structure are known as Prussian blue analogs (PBAs). Anode materials for oxides, sulfides, selenides, phosphides, borides, and carbides have been extensively explored as anode materials in the field of energy conversion and storage in recent years. The advantages and disadvantages of oxides, sulfides, selenides, phosphides, borides, carbides, and other elements, as well as experimental methodologies and electrochemical properties, are discussed in this work. The findings reveal that employing oxides, sulfides, selenides, phosphides, borides, and other electrode materials to overcome the problems of low conductivity, excessive material loss, and low specific volume is ineffective. Therefore, this review intends to address the issues of diverse energy storage materials by combining multiple technologies to manufacture battery materials with low cost, large capacity, and extended service life.
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Affiliation(s)
- Ronghao Wang
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Chengfei Qian
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Zherui Zhang
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Hao Shen
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Jingjie Xia
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Dingyu Cui
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Kaiwen Sun
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - He Liu
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Cong Guo
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Feng Yu
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Jingfa Li
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Weizhai Bao
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
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185
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Sawangrat C, Thipchai P, Kaewapai K, Jantanasakulwong K, Suhr J, Wattanachai P, Rachtanapun P. Surface Modification and Mechanical Properties Improvement of Bamboo Fibers Using Dielectric Barrier Discharge Plasma Treatment. Polymers (Basel) 2023; 15:polym15071711. [PMID: 37050325 PMCID: PMC10096777 DOI: 10.3390/polym15071711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
The effect of argon (Ar) and oxygen (O2) gases as well as the treatment times on the properties of modified bamboo fibers using dielectric barrier discharge (DBD) plasma at generated power of 180 W were investigated. The plasma treatment of bamboo fibers with inert gases leads to the generation of ions and radicals on the fiber surface. Fourier transform-infrared spectroscopy (FTIR) confirmed that the functional groups of lignin and hemicellulose were reduced owing to the removal of the amorphous portion of the fibers by plasma etching. X-ray diffraction analysis (XRD) results in an increased crystallinity percentage. X-ray photoelectron spectroscopy (XPS) results showed the oxygen/carbon (O/C) atomic concentration ratio increased with increasing treatment time. The fiber weight loss percentage increased with increased treatment time. Scanning electron microscopy (SEM) images showed that partial etching of the fiber surface led to a higher surface roughness and area and that the Ar + O2 gas plasma treatment provided more surface etching than the Ar gas treatment because of the oxidation reaction of the O2 plasma. The mechanical properties of fiber-reinforced epoxy (FRE) matrix composites revealed that the F(tr)RE-Ar (30) samples showed a high tensile strength, whereas the mechanical properties of the F(tr)RE-Ar + O2 sample decreased with increased treatment time.
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Affiliation(s)
- Choncharoen Sawangrat
- Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Parichat Thipchai
- Doctor of Philosophy Program in Nanoscience and Nanotechnology (International Program/Interdisciplinary), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kannikar Kaewapai
- Science and Technology Park (STeP), Chiang Mai University, Chiang Mai 50100, Thailand
| | - Kittisak Jantanasakulwong
- Division of Packaging Technology, School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
- Cluster of Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand
| | - Jonghwan Suhr
- School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si 16419, Gyeonggi-do, Republic of Korea
| | - Pitiwat Wattanachai
- Department of Civil Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Pornchai Rachtanapun
- Division of Packaging Technology, School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
- Cluster of Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand
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186
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Zhang H, He X, Wang H, Chen L, Xu G, Zhang N, Qu K, He Q, Peng Y, Pan J. In situgrowth strategy to construct perovskite quantum dot@covalent organic framework composites with enhanced water stability. Nanotechnology 2023; 34:245601. [PMID: 36881878 DOI: 10.1088/1361-6528/acc1ec] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
Metal halide perovskite quantum dots (QDs) have excellent optoelectronic properties; however, their poor stability under water or thermal conditions remains an obstacle to commercialization. Here, we used a carboxyl functional group (-COOH) to enhance the ability of a covalent organic framework (COF) to adsorb lead ions and grow CH3NH3PbBr3(MAPbBr3) QDsin situinto a mesoporous carboxyl-functionalized COF to construct MAPbBr3QDs@COF core-shell-like composites to improve the stability of perovskites. Owing to the protection of the COF, the as-prepared composites exhibited enhanced water stability, and the characteristic fluorescence was maintained for more than 15 d. These MAPbBr3QDs@COF composites can be used to fabricate white light-emitting diodes with a color comparable to natural white emission. This work demonstrates the importance of functional groups for thein situgrowth of perovskite QDs, and coating with a porous structure is an effective way to improve the stability of metal halide perovskites.
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Affiliation(s)
- Hongyan Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Xiaoxiong He
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Hao Wang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Liangjun Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Gaopeng Xu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Nan Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Kang Qu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Qingquan He
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yongwu Peng
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Jun Pan
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
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187
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Xia X, Liu B, Zhao B, Xia Z, Li S. Enhanced Water Adsorption of MIL-101(Cr) by Metal-Organic Polyhedral Encapsulation for Adsorption Cooling. Nanomaterials (Basel) 2023; 13:1147. [PMID: 37049241 PMCID: PMC10096998 DOI: 10.3390/nano13071147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/18/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
Metal-organic frameworks (MOFs) are one of the most promising adsorbents in the adsorption cooling system (ACS) for their outstanding water adsorption performance. Notwithstanding that fact, numerous reports pay more attention to the ACS performance improvement through enhancing equilibrium water uptake of MOFs. However, adsorption cooling performance, including specific cooling power (SCP) and coefficient of performance for cooling (COPC) of MOF/water working pairs, always depends on the water adsorption kinetics of MOFs in ACS. In this work, to increase the water adsorption rate, the preparation of MOP/MIL-101(Cr) was achieved by encapsulating hydrophilic metal-organic polyhedral (MOP) into MIL-101(Cr). It was found that the hydrophilicity of MOP/MIL-101(Cr) was enhanced upon hydrophilic MOP3 encapsulation, resulting in a remarkable improvement in water adsorption rates. Furthermore, both SCP and COPC for MOP/MIL-101(Cr)-water working pairs were also improved because of the fast water adsorption of MOP/MIL-101(Cr). In brief, an effective approach to enhance the water adsorption rate and cooling performance of MOF-water working pairs through enhancing the hydrophilicity of MOFs by encapsulating MOP into MOFs was reported in this work, which provides a new strategy for broadening the application of MOF composites in ACS.
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Affiliation(s)
- Xiaoxiao Xia
- School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Boyun Liu
- School of Power Engineering, Naval of University of Engineeing, Wuhan 430074, China
| | - Bo Zhao
- School of Power Engineering, Naval of University of Engineeing, Wuhan 430074, China
| | - Zichao Xia
- School of Power Engineering, Naval of University of Engineeing, Wuhan 430074, China
| | - Song Li
- School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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188
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Ferrini F, Paolone G, Di Domenico GL, Pagani N, Gherlone EF. SEM Evaluation of the Marginal Accuracy of Zirconia, Lithium Disilicate, and Composite Single Crowns Created by CAD/CAM Method: Comparative Analysis of Different Materials. Materials (Basel) 2023; 16:2413. [PMID: 36984293 PMCID: PMC10058296 DOI: 10.3390/ma16062413] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/12/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
(1) Background: The objective of this in vitro study is to evaluate the marginal accuracy of crowns created by CAD/CAM. (2) Methods: A customized chrome-cobalt (Cr-Co) implant abutment simulating a maxillary right first molar was fixed in a hemi-maxillary stone model and scanned. In total, 27 crowns were fabricated, including 9 lithium disilicate crowns, 9 composite crowns, and 9 zirconia crowns. The measurements were determined by scanning electron microscopy. Descriptive analysis was performed using the mean and standard deviation, while the Kruskal-Wallis test was performed to determine whether the marginal discrepancies were significantly different between each group (p < 0.05). (3) Results: The lowest marginal gap value was reported for zirconia (21.45 ± 12.58 µm), followed by composite (44.7 ± 24.96 µm) and lithium disilicate (62.28 ± 51.8 µm). The Kruskal-Wallis tests revealed a statistically significant difference (p-value < 0.05) in the mean marginal gaps between different materials. (4) Conclusions: The proposed digital workflow can be a viable alternative for fixed prosthetic rehabilitations. The best performance in terms of marginal gap was achieved by zirconia crowns, but all three materials demonstrate marginal closure below the clinically accepted threshold value (120 µm). Clinical significance: although significant differences were reported, the investigated CAD/CAM materials showed clinically acceptable marginal gaps.
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Affiliation(s)
- Francesco Ferrini
- Dental School, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Gaetano Paolone
- Dental School, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | | | - Nicolò Pagani
- Dental School, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20132 Milan, Italy
| | - Enrico Felice Gherlone
- Dental School, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, 20132 Milan, Italy
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189
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Madenci E, Özkılıç YO, Aksoylu C, Asyraf MRM, Syamsir A, Supian ABM, Elizaveta B. Experimental and Analytical Investigation of Flexural Behavior of Carbon Nanotube Reinforced Textile Based Composites. Materials (Basel) 2023; 16:2222. [PMID: 36984100 PMCID: PMC10059876 DOI: 10.3390/ma16062222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/15/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
In this study, the main goal of this study was to understand the effect of carbon nanotube (CNT) additives on the elastic behaviors of textile-based composites. The materials have three phases: carbon fiber fabric, epoxy matrix, and carbon nanotubes. Different weight fractions of CNTs were used (0% as a reference, 0.3%). Mechanical tests were performed, such as tension and three-point bending beam tests. In addition, the composite material damages were examined in detail. The experimental results show that the samples with CNT carried 9% and 23% more axial tensile force and bending capacity on average than those with NEAT. Besides, it was understood that adding 0.3% by weight of MWCNT increases the tensile modulus by approximately 9%. Finally, the mechanical tensile and bending tests are supported by analytical solutions successfully applied in the literature.
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Affiliation(s)
- Emrah Madenci
- Department of Civil Engineering, Necmettin Erbakan University, 42090 Konya, Turkey
| | | | - Ceyhun Aksoylu
- Department of Civil Engineering, Konya Technical University, 42090 Konya, Turkey
| | - Muhammad Rizal Muhammad Asyraf
- Engineering Design Research Group (EDRG), Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
- Centre for Advanced Composite Materials (CACM), Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Agusril Syamsir
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia
| | - Abu Bakar Mohd Supian
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, Kajang 43000, Selangor, Malaysia
| | - Bobrynina Elizaveta
- World-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, 190121 Saint-Petersburg, Russia
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Parshina A, Yelnikova A, Kolganova T, Titova T, Yurova P, Stenina I, Bobreshova O, Yaroslavtsev A. Perfluorosulfonic Acid Membranes Modified with Polyaniline and Hydrothermally Treated for Potentiometric Sensor Arrays for the Analysis of Combination Drugs. Membranes (Basel) 2023; 13:311. [PMID: 36984697 PMCID: PMC10058550 DOI: 10.3390/membranes13030311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
A novel potentiometric multisensory system for the analysis of sulfamethoxazole and trimethoprim combination drugs was developed. The potentiometric sensors (Donnan potential (DP) was used as an analytical signal) with an inner reference solution were based on perfluorosulfonic acid (PFSA) membranes modified with polyaniline (PANI) by in situ oxidative polymerization. The order of the membrane treatment with precursor solutions and their concentrations was varied. Additionally, the PFSA/PANI composite membranes were hydrothermally treated at 120 °C. The influence of the preparation conditions and the composition of membranes on their sorption and transport properties was studied. We estimated the factors affecting the sensitivity of DP-sensors based on the PFSA/PANI composite membranes to ions of sulfamethoxazole and trimethoprim simultaneously presented in solutions. A developed multisensory system provided a simultaneous determination of two analytes in aqueous solutions without preliminary separation, derivatization, or probe treatment. The re-estimation of the calibration characteristics of the multisensory system did not show a statistically significant difference after a year of its use. The limits of detection of sulfamethoxazole and trimethoprim were 1.4 × 10-6 and 8.5 × 10-8 M, while the relative errors of their determination in the combination drug were 4 and 5% (at 5 and 6% relative standard deviation), respectively.
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Affiliation(s)
- Anna Parshina
- Department of Analytical Chemistry, Voronezh State University, 394018 Voronezh, Russia
| | - Anastasia Yelnikova
- Department of Analytical Chemistry, Voronezh State University, 394018 Voronezh, Russia
| | - Tatyana Kolganova
- Department of Analytical Chemistry, Voronezh State University, 394018 Voronezh, Russia
| | - Tatyana Titova
- Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia
| | - Polina Yurova
- Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia
| | - Irina Stenina
- Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia
| | - Olga Bobreshova
- Department of Analytical Chemistry, Voronezh State University, 394018 Voronezh, Russia
| | - Andrey Yaroslavtsev
- Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia
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191
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Albar N, Khayat W. Fracture Load of Mesio-Occluso-Distal Composite Restorations Performed with Different Reinforcement Techniques: An In Vitro Study. Polymers (Basel) 2023; 15:polym15061358. [PMID: 36987139 PMCID: PMC10051638 DOI: 10.3390/polym15061358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/25/2023] [Accepted: 03/07/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Mesio-occluso-distal (MOD) cavity preparations are often fragile due to the amount of tooth and carious structure removed. MOD cavities can often fracture if left unsupported. AIM The study investigated the maximum fracture load of mesi-occluso-distal cavities restored using direct composite resin restorations with various reinforcement techniques. METHOD Seventy-two freshly extracted, intact human posterior teeth were disinfected, checked, and prepared according to predetermined standards for mesio-occluso-distal cavity design (MOD). The teeth were assigned randomly into six groups. The first group was the control group restored conventionally with a nanohybrid composite resin (Group I). The other five groups were restored with a nanohybrid composite resin reinforced with different techniques: the ACTIVA BioACTIVE-Restorative and -Liner as a dentin substitute and layered with a nanohybrid composite (Group II); the everX Posterior composite resin layered with a nanohybrid composite (Group III); polyethylene fibers called "Ribbond" placed on both axial walls and the floor of the cavity, and layered with a nanohybrid composite (Group IV); polyethylene fibers placed on both axial walls and the floor of the cavity, and layered with the ACTIVA BioACTIVE-Restorative and -Liner as a dentin substitute and nanohybrid composite (Group V); and polyethylene fibers placed on both axial walls and the floor of the cavity and layered with the everX posterior composite resin and nanohybrid composite (Group VI). All teeth were subjected to thermocycling to simulate the oral environment. The maximum load was measured using a universal testing machine. RESULTS The highest maximum load was exhibited by Group III with the everX posterior composite resin, followed by Group IV, Group VI, Group I, Group II, and Group V. A statistically significant difference was demonstrated between groups (p = 0.0023). When adjusting for multiple comparisons, there were statistical differences specific to comparisons between Group III versus I, Group III versus II, Group IV versus II, and Group V versus III. CONCLUSIONS Within the limitations of the current study, it can be concluded that a higher maximum load resistance can be achieved (statistically significant) when reinforcing nanohybrid composite resin MOD restorations with everX Posterior.
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Affiliation(s)
- Nassreen Albar
- Department of Restorative Dentistry, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
| | - Waad Khayat
- Department of Restorative Dentistry, College of Dentistry, Umm Al-Qura University, Makkah 24381, Saudi Arabia
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Chronopoulou L, Binaymotlagh R, Cerra S, Haghighi FH, Di Domenico EG, Sivori F, Fratoddi I, Mignardi S, Palocci C. Preparation of Hydrogel Composites Using a Sustainable Approach for In Situ Silver Nanoparticles Formation. Materials (Basel) 2023; 16:ma16062134. [PMID: 36984014 PMCID: PMC10056655 DOI: 10.3390/ma16062134] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 05/27/2023]
Abstract
The recognized antibacterial properties of silver nanoparticles (AgNPs) characterize them as attractive nanomaterials for developing new bioactive materials less prone to the development of antibiotic resistance. In this work, we developed new composites based on self-assembling Fmoc-Phe3 peptide hydrogels impregnated with in situ prepared AgNPs. Different methodologies, from traditional to innovative and eco-sustainable, were compared. The obtained composites were characterized from a hydrodynamic, structural, and morphological point of view, using different techniques such as DLS, SEM, and rheological measurements to evaluate how the choice of the reducing agent determines the characteristics of AgNPs and how their presence within the hydrogel affects their structure and properties. Moreover, the antibacterial properties of these composites were tested against S. aureus, a major human pathogen responsible for a wide range of clinical infections. Results demonstrated that the hydrogel composites containing AgNPs (hgel@AgNPs) could represent promising biomaterials for treating S. aureus-related infections.
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Affiliation(s)
- Laura Chronopoulou
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Research Center for Applied Sciences to the Safeguard of Environment and Cultural Heritage (CIABC), Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Roya Binaymotlagh
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Sara Cerra
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Farid Hajareh Haghighi
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Enea Gino Di Domenico
- Department of Biology and Biotechnology “C. Darwin”, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Francesca Sivori
- Microbiology and Virology, San Gallicano Dermatological Institute, IRCCS, Via E. Chianesi 53, 00144 Rome, Italy
| | - Ilaria Fratoddi
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Silvano Mignardi
- Research Center for Applied Sciences to the Safeguard of Environment and Cultural Heritage (CIABC), Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Department of Earth Sciences, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
| | - Cleofe Palocci
- Department of Chemistry, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
- Research Center for Applied Sciences to the Safeguard of Environment and Cultural Heritage (CIABC), Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
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Canelo-Yubero D, Kocich R, Šaroun J, Strunz P. Residual Stress Distribution in a Copper-Aluminum Multifilament Composite Fabricated by Rotary Swaging. Materials (Basel) 2023; 16:ma16052102. [PMID: 36903219 PMCID: PMC10004458 DOI: 10.3390/ma16052102] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 05/27/2023]
Abstract
Rotary swaging is a promising technique for the fabrication of clad Cu/Al composites. Residual stresses appearing during the processing of a special arrangement of Al filaments within the Cu matrix and the influence of the bar reversal between the passes were studied by (i) neutron diffraction using a novel evaluation procedure for pseudo-strain correction and (ii) a finite element method simulation. The initial study of the stress differences in the Cu phase allowed us to infer that the stresses around the central Al filament are hydrostatic when the sample is reversed during the passes. This fact enabled the calculation of the stress-free reference and, consequently, the analysis of the hydrostatic and deviatoric components. Finally, the stresses with the von Mises relation were calculated. Hydrostatic stresses (far from the filaments) and axial deviatoric stresses are zero or compressive for both reversed and non-reversed samples. The reversal of the bar direction slightly changes the overall state within the region of high density of Al filaments, where hydrostatic stresses tend to be tensile, but it seems to be advantageous for avoiding plastification in the regions without Al wires. The finite element analysis revealed the presence of shear stresses; nevertheless, stresses calculated with the von Mises relation show similar trends in the simulation and in the neutron measurements. Microstresses are suggested as a possible reason for the large width of the neutron diffraction peak in the measurement of the radial direction.
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Affiliation(s)
- David Canelo-Yubero
- Neutron Physics Department, Nuclear Physics Institute of the CAS, 25068 Řež, Czech Republic
- Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Straße 1, 21502 Geesthacht, Germany
| | - Radim Kocich
- Faculty of Materials Science and Technology, VŠB–Technical University of Ostrava, 17. Listopadu 15, 70833 Ostrava, Czech Republic
| | - Jan Šaroun
- Neutron Physics Department, Nuclear Physics Institute of the CAS, 25068 Řež, Czech Republic
| | - Pavel Strunz
- Neutron Physics Department, Nuclear Physics Institute of the CAS, 25068 Řež, Czech Republic
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194
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Jovanovic JD, Blagojevic SN, Adnadjevic BK. The Effects of rGO Content and Drying Method on the Textural, Mechanical, and Thermal Properties of rGO/Polymer Composites. Polymers (Basel) 2023; 15:polym15051287. [PMID: 36904528 PMCID: PMC10007388 DOI: 10.3390/polym15051287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 03/08/2023] Open
Abstract
Composite hydrogels samples consisting of poly(methyl methacrylate/butyl acrylate/2-hydroxyethylmethacrylate) (poly-OH) and up to 60% reduced graphene oxide (rGO) containing rGO were synthesized. The method of coupled thermally induced self-assembly of graphene oxide (GO) platelets within a polymer matrix and in situ chemical reduction of GO was applied. The synthesized hydrogels were dried using the ambient pressure drying (APD) and freeze-drying (FD) methods. The effects of the weight fraction of rGO in the composites and the drying method on the textural, morphological, thermal, and rheological properties were examined for the dried samples. The obtained results indicate that APD leads to the formation of non-porous xerogels (X) of high bulk density (D), while FD results in the formation of highly porous aerogels (A) with low D. An increase in the weight fraction of rGO in the composite xerogels leads to an increase in D, specific surface area (SA), pore volume (Vp), average pore diameter (dp), and porosity (P). With an increase in the weight fraction of rGO in A-composites, the D values increase while the values of SP, Vp, dp, and P decrease. Thermo-degradation (TD) of both X and A composites takes place through three distinct steps: dehydration, decomposition of residual oxygen functional group, and polymer chain degradation. The thermal stabilities (TS) of the X-composites and X-rGO are higher than those of the A-composites and A-rGO. The values of the storage modulus (E') and the loss modulus (E") of the A-composites increase with the increase in their weight fraction of rGO.
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Affiliation(s)
- Jelena D. Jovanovic
- Institute of General and Physical Chemistry, Studentski Trg 12-16/V, 11158 Belgrade, Serbia
- Correspondence: or
| | - Stevan N. Blagojevic
- Institute of General and Physical Chemistry, Studentski Trg 12-16/V, 11158 Belgrade, Serbia
| | - Borivoj K. Adnadjevic
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12-16, 11158 Belgrade, Serbia
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195
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Diamantopoulou S, Johnston WM, Ghinea R, Papazoglou E. Coverage error of three resin composite systems to vital unrestored maxillary anterior teeth. J ESTHET RESTOR DENT 2023; 35:352-359. [PMID: 35373479 DOI: 10.1111/jerd.12913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 03/05/2022] [Accepted: 03/20/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Define the color of anterior teeth of a selected population and correlate it (by using coverage error [CE] and the frequency of best match) with the final color of all possible enamel-dentine combinations of three different resin composite systems. MATERIALS AND METHODS Color of 636 vital unrestored anterior teeth (central incisors, lateral incisors and canines; n = 212) and disk specimens (12 mm diameter, varying thickness) corresponding to enamel-dentin combinations of all available enamel (0.5 mm and 1.0 mm thickness) and dentin shades (3.0 mm thickness) of Essentia, Enamel Plus HRi and IPS Empress Direct composite systems was measured using a clinical dental spectrophotometer (Spectroshade Micro). CE and frequency of best match for all composite systems were calculated for the measured in-vivo teeth color space. RESULTS Natural in-vivo teeth exhibit higher lightness when compared to enamel-dentin composite combinations, independently of the enamel thickness used. The best (lowest) CE was found for IPS Empress, while the highest values were found for Enamel Plus Hri independently of tooth type and enamel thickness (p < 0.001). The use of 0.5 mm instead of 1.0 mm enamel thickness within enamel-dentin composite combinations resulted in a lower CE for in-vivo tooth color (p < 0.001). CONCLUSIONS The color space defined by all possible enamel-dentin combinations of the studied resin composite systems does not fully match the color range of anterior teeth. All composite systems examined lack combinations with lightness values as high as the population's. IPS Empress Direct composite system represented better the in-vivo teeth color. CLINICAL SIGNIFICANCE The use of 0.5 mm enamel shade thickness is suggested when building layered restorations, as it provided better color coverage than using 1.0 mm thickness.
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Affiliation(s)
- Sofia Diamantopoulou
- Department of Operative Dentistry, School of Health Sciences, Faculty of Dentistry, University of Athens, Athens, Greece
| | - William M Johnston
- Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, USA
| | - Razvan Ghinea
- Department of Optics, Faculty of Science, University of Granada, Granada, Spain.,Department of Physics, Faculty of Science, University of Craiova, Craiova, Romania
| | - Efstratios Papazoglou
- Department of Operative Dentistry, School of Health Sciences, Faculty of Dentistry, University of Athens, Athens, Greece
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196
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Perez BG, Gaidarji B, Righes DZ, Pecho OE, Pereira GKR, Durand LB. Masking ability of resin composites: A scoping review. J ESTHET RESTOR DENT 2023; 35:333-344. [PMID: 36260930 DOI: 10.1111/jerd.12976] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/23/2022] [Accepted: 09/27/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To map the existing evidence regarding the masking ability of resin composites. OVERVIEW The literature search was conducted electronically, based on the PRISMA Extension for Scoping Reviews-online protocol at https://osf.io/m2h67/ with no language or time restrictions. Two independent reviewers conducted the screening, and a third reviewer was consulted in case of disagreement. Studies that evaluated resin composite masking ability regardless of background, application technique, thickness, or number of layers were selected. The search found 2995 potentially eligible studies. After removal of duplicates (657), irrelevant articles (2323), 15 citations met the eligibility criteria based on title and abstract, and eight studies were included based on full text analysis (seven in vitro, and one case report). Acceptable masking ability is obtained by one layer of opaque shade resin composite or by the layering technique. A black background is masked with 1.0- to 2.0 mm-thick layers of opaque shade resin composites. Masking of the C4 background is achieved with one layer of 0.5- to 1.5 mm-thick opaque shade resin composite or by the layering technique using different combinations of enamel body and dentin shades with a final thickness of 1.5 mm. CONCLUSIONS Acceptable masking of C4 shade background is achieved with one layer of opaque shade composite at least 0.5 mm-thick or by different combinations of the layering technique, with a final thickness of 1.5 mm. Acceptable masking of the black background of the oral cavity is achieved with a resin composite of at least 1.0 mm opaque shade. CLINICAL SIGNIFICANCE The thickness of the resin composite layer required to achieve adequate masking is variable and depends on the translucency/opacity of the tested resin composites and the background shade.
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Affiliation(s)
- Bibiana Gabardo Perez
- Postgraduate Program in Oral Science, Division of Restorative Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Bruna Gaidarji
- Postgraduate Program in Oral Science, Division of Restorative Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Danielle Zorzo Righes
- Postgraduate Program in Oral Science, Division of Restorative Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Oscar E Pecho
- Postgraduate Program in Dentistry, School of Dentistry, Meridional Faculty (IMED), Passo Fundo, Rio Grande do Sul, Brazil
| | - Gabriel Kalil Rocha Pereira
- Postgraduate Program in Oral Science, Faculty of Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Letícia Brandão Durand
- Postgraduate Program in Oral Science, Faculty of Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
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197
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Imani Z, Sodagar A, Pourhajibagher M, Hosseinpour Nader A, Bahador A. Evaluation of antibacterial effect of the orthodontic composite containing propolis nanoparticles in rat as an animal model. Folia Med (Plovdiv) 2023; 65:131-139. [PMID: 36855985 DOI: 10.3897/folmed.65.e67782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 07/15/2021] [Indexed: 03/02/2023] Open
Abstract
AIM The present study aimed to assess the antimicrobial effects of orthodontic primer containing nano-propolis against the cariogenic bacteria in а rat model. MATERIALS AND METHODS Transbond XT orthodontic primer containing 0%, 1%, 5%, and 10% nano-propolis was experimentally prepared in-house. The Wistar rats we used in the study were randomly divided into four groups and their oral cavities were colonized with Streptococcus mutans, Streptococcus sanguinis, and Lactobacillus acidophilus. After anesthetizing the rats, one drop (10 µL) of primer containing different concentrations of nano-propolis was applied to the labial surface of the maxillary incisor and light-cured. The orthodontic composite was applied on the primer and light-cured. One drop (10 µL) of primer containing the same concentrations of nano-propolis was again applied on the surface of composite and light-cured. The number of S. mutans, S. sanguinis, and L. acidophilus colonies in the saliva of rats was quantified at 24 h, at days 4 and 7 using plate counting. RESULTS Primer containing 1%, 5%, and 10% of nano-propolis significantly reduced the S. mutans colony count at 24 h compared with the control group (p<0.05). At day 4, the mean S. mutans colony counts in the 5% and 10% nano-propolis groups were significantly lower than that in the control group (p<0.05). Primer containing 1%, 5%, and 10% (all (p<0.05) of nano-propolis significantly reduced the L. acidophilus at 24 hours. Also, at day 4 the mean L. acidophilus colony counts in the 5% and 10% nano-propolis groups were significantly lower than that in the control group (p<0.05). At 24 h and 4 days, the mean S. sanguinis colony count in the 1%, 5%, and 10% nano-propolis group was significantly lower than that in the control group (p<0.05). No significant difference was observed in the presence of all concentrations of nano-propolis at day 7 (p>0.05). CONCLUSIONS Orthodontic primer containing nano-propolis significantly reduced the colony count of cariogenic bacteria in a rat model.
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Affiliation(s)
- Zeinab Imani
- Tehran University of Medical Sciences, Tehran, Iran
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198
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Tauanov Z, Zakiruly O, Baimenova Z, Baimenov A, Akimbekov NS, Berillo D. Antimicrobial and Antiviral Properties of Triclosan-Containing Polymer Composite: Aging Effects of pH, UV, and Sunlight Exposure. Polymers (Basel) 2023; 15. [PMID: 36904477 DOI: 10.3390/polym15051236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/14/2023] [Accepted: 02/27/2023] [Indexed: 03/04/2023] Open
Abstract
The present study deals with the synthesis and characterization of a polymer composite based on an unsaturated ester loaded with 5 wt.% triclosan, produced by co-mixing on an automated hardware system. The polymer composite's non-porous structure and chemical composition make it an ideal material for surface disinfection and antimicrobial protection. According to the findings, the polymer composite effectively inhibited (100%) the growth of Staphylococcus aureus 6538-P under exposure to physicochemical factors, including pH, UV, and sunlight, over a 2-month period. In addition, the polymer composite demonstrated potent antiviral activity against human influenza virus strain A and the avian coronavirus infectious bronchitis virus (IBV), with infectious activities of 99.99% and 90%, respectively. Thus, the resulting triclosan-loaded polymer composite is revealed to have a high potential as a surface-coating non-porous material with antimicrobial properties.
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199
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Białek M, Czaja K. Application of Silsesquioxanes in the Preparation of Polyolefin-Based Materials. Materials (Basel) 2023; 16:1876. [PMID: 36902992 PMCID: PMC10004241 DOI: 10.3390/ma16051876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
This paper is a review of studies on the use of the polyhedral oligomeric silsesquioxanes (POSS) of various structures in the synthesis of polyolefins and the modification of their properties, namely: (1) components of organometallic catalytic systems for the polymerization of olefins, (2) comonomers in the copolymerization with ethylene, and (3) fillers in composites based on polyolefins. In addition, studies on the use of new silicon compounds, i.e., siloxane-silsesquioxane resins, as fillers for composites based on polyolefins are presented. The authors dedicate this paper to Professor Bogdan Marciniec on the occasion of his jubilee.
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200
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Yu J, Chen T, Zhao Y. Study on Optimization of Drilling Parameters for Laminated Composite Materials. Materials (Basel) 2023; 16:1796. [PMID: 36902912 PMCID: PMC10004331 DOI: 10.3390/ma16051796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/04/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Fiber-reinforced resin matrix composites have been widely used in aerospace, construction, transportation and other industries due to their excellent mechanical properties and flexible structural design. However, due to the influence of the molding process, the composites are easily delaminated, which greatly reduces the structural stiffness of the components. This is a common problem in the processing of fiber-reinforced composite components. In this paper, through the combination of finite element simulation analysis and experimental research, drilling parameter analysis was carried out for prefabricated laminated composites, and the influence of different processing parameters on the processing axial force was qualitatively compared. The inhibition rule of variable parameter drilling on the damage propagation of initial laminated drilling was explored, which further improves the drilling connection quality of composite panels with laminated materials.
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Affiliation(s)
- Jiali Yu
- State-Owned Wuhu Machinery Factory, Wuhu 241000, China
| | - Tao Chen
- School of Future Science and Engineering, Soochow University, Suzhou 215299, China
| | - Yiming Zhao
- State-Owned Wuhu Machinery Factory, Wuhu 241000, China
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