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Esposito Corcione C, Ferrari F, Striani R, Greco A. Transport Properties of Natural and Artificial Smart Fabrics Impregnated by Graphite Nanomaterial Stacks. NANOMATERIALS 2021; 11:nano11041018. [PMID: 33923486 PMCID: PMC8073142 DOI: 10.3390/nano11041018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 12/03/2022]
Abstract
In this work, we studied the transport properties (thermal and electrical conductivity) of smart fabric materials treated with graphite nanomaterial stacks–acetone suspensions. An innovative and easy method to produce graphite nanomaterial stacks–acetone-based formulations, starting from a low-cost expandable graphite, is proposed. An original, economical, fast, and easy method to increase the thermal and electrical conductivity of textile materials was also employed for the first time. The proposed method allows the impregnation of smart fabric materials, avoiding pre-coating of the fibers, thus reducing costs and processing time, while obtaining a great increase in the transport properties. Two kinds of textiles, cotton and Lycra®, were selected as they represent the most used natural and artificial fabrics, respectively. The impact of the dimensions of the produced graphite nanomaterial stacks–acetone-based suspensions on both the uniformity of the treatment and the transport properties of the selected textile materials was accurately evaluated using several experimental techniques. An empirical relationship between the two transport properties was also successfully identified. Finally, several theoretical models were applied to predict the transport properties of the developed smart fabric materials, evidencing a good agreement with the experimental data.
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Xu Y, Zhao R, Chen H, Guo X, Huang Y, Gao H, Wu X. Preparation, characterization and biological activity evaluation of pirimiphos-methyl microcapsules. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-020-02379-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zirconia toughened hydroxyapatite biocomposite formed by a DLP 3D printing process for potential bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110054. [PMID: 31546401 DOI: 10.1016/j.msec.2019.110054] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/25/2019] [Accepted: 08/03/2019] [Indexed: 12/30/2022]
Abstract
The construction of ceramic components with UV curing is a developing trend by an additive manufacturing (AM) technology, due to the excellent advantages of high precision selective fixation and rapid prototyping, the application of this technology to bone defect repair had become one of the hotspots of research. Hydroxyapatite (HAP) is one of the most popular calcium phosphate biomaterials, which is very close to the main ingredient of human bones. Thus, hydroxyapatite biomaterials are popular as bone graft materials. In summary, the preparation of HAP bioceramics by a 3D printing of digital light processing (DLP) is a promising work. However, the preparation of HAP hybrid suspensions with high solid loading and good fluidity that can be printed by DLP encountered some challenges. Therefore, the purpose of this work is to improve and develop a novel UV-curing suspension with a high solids loading, which the suspension with the hydrodynamic properties and stability are suitable for DLP printer, in order to compensate for the brittleness of HAP ceramics itself to a certain extent, a low amount of zirconia was added in the suspension as an additive to fabricate a zirconia toughened HAP bioceramic composite by a DLP of 3D printing. In this work, the HAP powder was pre-modified by two organic modifiers to improve the compatibility in the acrylic resin system, and the addition of the castor oil phosphate further reduced the shear stress of the suspension to ensure strong liquidity. The UV suspension with 60 wt% powder particle loading had a minimum viscosity of 7495 mPa·s at 30 rpm, which was vacuum sintered at 1100 °C, 1200 °C, and 1250 °C, respectively. The composite ceramics (with 6 wt% ZrO2) at 1200 °C had a relative density of 90.7%, while the sintered samples at 1250 °C had stronger tensile strength and bending strength. The toughening effect of zirconia incorporation on HAP ceramics was also confirmed by the change of tensile modulus and bending modulus, whereas the corresponding mechanical properties were also significantly enhanced.
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de Hoyos-Martínez PL, Robles E, Khoukh A, Charrier-El Bouhtoury F, Labidi J. Formulation of Multifunctional Materials Based on the Reaction of Glyoxalated Lignins and a Nanoclay/Nanosilicate. Biomacromolecules 2019; 20:3535-3546. [PMID: 31329420 DOI: 10.1021/acs.biomac.9b00799] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Two organosolv lignins from different origins, namely, almond shells and maritime pine, were modified by using a nanoclay and nanosilicate. Prior to modification, they were activated via glyoxalation to enhance the reactivity of the lignins and thus ease the introduction of the nanoparticles into their structure. The lignins were characterized by several techniques (Fourier transformed infrared, high-performance size exclusion chromatography, 1H NMR, X-ray diffraction, and thermogravimetric analysis) before and after modification to elucidate the main chemical and structural changes. The reaction with glyoxal proved to increase the amount of hydroxyl groups and methylene bridges. This tendency was more pronounced, as the percentage of glyoxal was incremented. On the other side, the addition of the nanoclay and nanosilicate particles improved the thermal stability of the lignins compared to that of the original unmodified ones. This trend was more evident for the lignin derived from maritime pine, which displayed better results regarding the thermal stability, indicating a more effective combination of the nanoparticles in the lignin structure during the modification process.
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Affiliation(s)
- Pedro L de Hoyos-Martínez
- Chemical and Environmental Engineering Department , University of the Basque Country UPV/EHU , Plaza Europa, 1 , 20018 Donostia-San Sebastián , Spain.,C NRS/UPPA PAU & PAYS ADOUR/E25 UPPA , Institute of Analytical Sciences and Physico-Chemistry for Environment and Materials (IPREM), IUT des Pays de l'Adour , 371 Rue de Ruisseau , 40004 Mont de Marsan , France
| | - Eduardo Robles
- Chemical and Environmental Engineering Department , University of the Basque Country UPV/EHU , Plaza Europa, 1 , 20018 Donostia-San Sebastián , Spain
| | - Abdel Khoukh
- CNRS/UPPA PAU & PAYS ADOUR/ E25 UPPA , Institute of Analytical Sciences and Physico-Chemistry for Environment and Materials (IPREM), IUT des Pays de l'Adour , 2 Avenue du Président Angot , Pau F-64053 , France
| | - Fatima Charrier-El Bouhtoury
- C NRS/UPPA PAU & PAYS ADOUR/E25 UPPA , Institute of Analytical Sciences and Physico-Chemistry for Environment and Materials (IPREM), IUT des Pays de l'Adour , 371 Rue de Ruisseau , 40004 Mont de Marsan , France
| | - Jalel Labidi
- Chemical and Environmental Engineering Department , University of the Basque Country UPV/EHU , Plaza Europa, 1 , 20018 Donostia-San Sebastián , Spain
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PolyDiethyleneglycol–bisallyl carbonate matrix transparent nanocomposites reinforced with bacterial cellulose microfibrils. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.05.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Giuri A, Masi S, Colella S, Listorti A, Rizzo A, Kovtun A, Dell'Elce S, Liscio A, Esposito Corcione C. Rheological and physical characterization of PEDOT: PSS/graphene oxide nanocomposites for perovskite solar cells. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24554] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Antonella Giuri
- Dipartimento di Ingegneria dell'Innovazione; Università del Salento; via per Monteroni, km 1 Lecce 73100 Italy
| | - Sofia Masi
- Istituto di Nanotecnologia CNR-Nanotec; Polo di Nanotecnologia c/o Campus Ecotekne, via Monteroni; Lecce 73100 Italy
| | - Silvia Colella
- Istituto di Nanotecnologia CNR-Nanotec; Polo di Nanotecnologia c/o Campus Ecotekne, via Monteroni; Lecce 73100 Italy
- Dipartimento di Matematica e Fisica “E. De Giorgi”; Università del Salento; Via Arnesano snc Lecce 73100 Italy
| | - Andrea Listorti
- Istituto di Nanotecnologia CNR-Nanotec; Polo di Nanotecnologia c/o Campus Ecotekne, via Monteroni; Lecce 73100 Italy
- Dipartimento di Matematica e Fisica “E. De Giorgi”; Università del Salento; Via Arnesano snc Lecce 73100 Italy
| | - Aurora Rizzo
- Istituto di Nanotecnologia CNR-Nanotec; Polo di Nanotecnologia c/o Campus Ecotekne, via Monteroni; Lecce 73100 Italy
| | - Alessandro Kovtun
- Istituto per la Sintesi Organica e la Fotoreattività CNR-ISOF; via Gobetti 101 Bologna 40120 Italy
| | - Simone Dell'Elce
- Istituto per la Sintesi Organica e la Fotoreattività CNR-ISOF; via Gobetti 101 Bologna 40120 Italy
| | - Andrea Liscio
- Istituto per la Sintesi Organica e la Fotoreattività CNR-ISOF; via Gobetti 101 Bologna 40120 Italy
- Istituto dei Sistemi Complessi CNR-ISC, via del Fosso del Cavaliere 100, 00133; Roma Italy
| | - Carola Esposito Corcione
- Dipartimento di Ingegneria dell'Innovazione; Università del Salento; via per Monteroni, km 1 Lecce 73100 Italy
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Kenny JM, Torre L, Chiacchiarelli LM. The effect of processing routes on the thermal and mechanical properties of poly(urethane-isocyanurate) nanocomposites. J Appl Polym Sci 2015. [DOI: 10.1002/app.42750] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- José María Kenny
- Civil and Environmental Engineering Department; University of Perugia; UdR INSTM 05100 Terni Italy
| | - Luigi Torre
- Civil and Environmental Engineering Department; University of Perugia; UdR INSTM 05100 Terni Italy
| | - Leonel Matias Chiacchiarelli
- Instituto de Tecnología de Polímeros y Nanotecnología, CONICET, Engineering Faculty; University of Buenos Aires; AAR1124 Buenos Aires Argentina
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Effect of compatibilization on the photo-oxidation behaviour of polyethylene/polyamide 6 blends and their nanocomposites. Polym Degrad Stab 2015. [DOI: 10.1016/j.polymdegradstab.2015.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Li Z, Wang J, Li C, Gu Z, Cheng L, Hong Y. Effects of montmorillonite addition on the performance of starch-based wood adhesive. Carbohydr Polym 2015; 115:394-400. [DOI: 10.1016/j.carbpol.2014.08.106] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 08/20/2014] [Accepted: 08/21/2014] [Indexed: 11/28/2022]
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Cold-Curing Structural Epoxy Resins: Analysis of the Curing Reaction as a Function of Curing Time and Thickness. MATERIALS 2014; 7:6832-6842. [PMID: 28788215 PMCID: PMC5456125 DOI: 10.3390/ma7096832] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 08/22/2014] [Accepted: 09/05/2014] [Indexed: 11/17/2022]
Abstract
The curing reaction of a commercial cold-curing structural epoxy resin, specifically formulated for civil engineering applications, was analyzed by thermal analysis as a function of the curing time and the sample thickness. Original and remarkable results regarding the effects of curing time on the glass transition temperature and on the residual heat of reaction of the cold-cured epoxy were obtained. The influence of the sample thickness on the curing reaction of the cold-cured resin was also deeply investigated. A highly exothermal reaction, based on a self-activated frontal polymerization reaction, was supposed and verified trough a suitable temperature signal acquisition system, specifically realized for this measurement. This is one of the first studies carried out on the curing behavior of these peculiar cold-cured epoxy resins as a function of curing time and thickness.
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Uysal Unalan I, Cerri G, Marcuzzo E, Cozzolino CA, Farris S. Nanocomposite films and coatings using inorganic nanobuilding blocks (NBB): current applications and future opportunities in the food packaging sector. RSC Adv 2014. [DOI: 10.1039/c4ra01778a] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Greco A, Maffezzoli A. Two-dimensional and three-dimensional simulation of diffusion in nanocomposite with arbitrarily oriented lamellae. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.04.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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The relationship between nanosilica dispersion degree and the tensile properties of polyurethane nanocomposites. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3019-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
In materials research, the development of polymer nanocomposites (PN) is rapidly emerging as a multidisciplinary research field with results that could broaden the applications of polymers to many different industries. PN are polymer matrices (thermoplastics, thermosets or elastomers) that have been reinforced with small quantities of nano-sized particles, preferably characterized by high aspect ratios, such as layered silicates and carbon nanotubes. Thermal analysis (TA) is a useful tool to investigate a wide variety of properties of polymers and it can be also applied to PN in order to gain further insight into their structure. This review illustrates the versatile applications of TA methods in the emerging field of polymer nanomaterial research, presenting some examples of applications of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical thermal analysis (DMTA) and thermal mechanical analysis (TMA) for the characterization of nanocomposite materials.
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Greco A, Timo A, Maffezzoli A. Development and Characterization of Amorphous Thermoplastic Matrix Graphene Nanocomposites. MATERIALS 2012. [PMCID: PMC5449044 DOI: 10.3390/ma5101972] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of the present work is the development of amorphous thermoplastic matrix nanocomposites based on graphite nanoparticles. Different types of graphite were used, including unmodified graphite, graphene nanoplatelets and graphite intercalation compounds. Graphite intercalation compounds were subjected to thermal treatment to attain exfoliation of the nanofiller. The exfoliation process was studied by means of thermal analysis. The nanofillers and nanocomposites were characterized by means of X-ray Diffraction (XRD) and Scanning Electron Microscope (SEM) analysis. The nanocomposites were further characterized by means of mechanical and dielectric analysis. The flammability of the nanocomposites was also analyzed. Results obtained indicate that addition of the nanofiller allows improving the proprieties of the amorphous thermoplastic matrix. The effect of the degree of dispersion of the nanofiller is particularly relevant for the dielectric properties of the nanocomposites, whereas no direct correlation between degree of dispersion and mechanical properties can be observed.
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Affiliation(s)
- Antonio Greco
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +39-832-297233; Fax: +39-832-297240
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Corcione CE, Freuli F, Maffezzoli A. The aspect ratio of epoxy matrix nanocomposites reinforced with graphene stacks. POLYM ENG SCI 2012. [DOI: 10.1002/pen.23292] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Qian Y, Lindsay CI, Macosko C, Stein A. Synthesis and properties of vermiculite-reinforced polyurethane nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2011; 3:3709-3717. [PMID: 21854000 DOI: 10.1021/am2008954] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Natural vermiculite was modified by cation exchange with long-chain quaternary alkylammonium salts and then dispersed in polyether-based polyols with different structures and ethylene oxide/propylene oxide ratios. The dispersions were evaluated by X-ray scattering and rheology. In all polyol dispersions tested, polyols were intercalated into the vermiculite interlayers. Also, significant shear thinning behavior was observed. A large interlayer spacing of ∼90 Å was achieved in one polyol suitable for polyurethane elastomer synthesis. In polyurethane made with this polyol, clay platelets were extensively intercalated or exfoliated. The composites showed a >270% increase in tensile modulus, >60% increase in tensile strength, and a 30% reduction in N(2) permeability with a loading of 5.3 wt % clay in polyurethane. Differential scanning calorimetry and dynamic mechanical analysis revealed that the nanoclay interacts with the polyurethane hard segments.
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Affiliation(s)
- Yuqiang Qian
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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Corcione CE, Cavallo A, Pesce E, Greco A, Maffezzoli A. Evaluation of the degree of dispersion of nanofillers by mechanical, rheological, and permeability analysis. POLYM ENG SCI 2011. [DOI: 10.1002/pen.21929] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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