1
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Jlassi K, Al Ejji M, Ahmed AK, Mutahir H, Sliem MH, Abdullah AM, Chehimi MM, Krupa I. A carbon dot-based clay nanocomposite for efficient heavy metal removal. NANOSCALE ADVANCES 2023; 5:4224-4232. [PMID: 37560431 PMCID: PMC10408590 DOI: 10.1039/d3na00334e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/16/2023] [Indexed: 08/11/2023]
Abstract
Carbon dots and their derivatives with fascinating photoluminescence properties have recently attracted tremendous scientific attention. This work describes the preparation of novel fluorescent bentonite clay (B), modified with carbon dot nanomaterials (CDs), and its usage as a lead removal platform. The CDs were prepared using a hydrothermal method from graphitic waste which served as the carbon source material. The as-obtained CDs were found to be fluorescent, being spherical in shape, positively charged, and smaller than 5 nm. Encouraged by their structure and photoluminescence features, they were used as surface modifiers to make fluorescent bentonite nanocomposites. Bentonite was used as a negatively charged model of aluminosilicate and reacted with the positively charged CDs. XRD, FTIR, XPS, and fluorescence analysis were used to characterize the prepared materials. The results indicate that the CDs intercalated inside the bentonite matrix were stable with excellent optical properties over time. They were finally used as an efficient hybrid platform for lead removal with a removal efficiency of 95% under light conditions, at room temperature, in an alkaline medium, and after only 10 min of reaction, compared to 70% under dark conditions. The pseudo-second-order kinetics and Langmuir isotherm models were better fitted to describe the adsorption process. The maximum adsorption capacity was equal to 400 mg g-1 toward Pb(ii) removal, at room temperature and pH = 8, under light conditions. To summarize, we have designed UV light stimuli responsive carbon dot-intercalated clay with high Pb(ii) adsorption capacity and long-term stability.
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Affiliation(s)
- Khouloud Jlassi
- Center for Advanced Materials, Qatar University P.O. Box 2713 Doha Qatar
| | - Maryam Al Ejji
- Center for Advanced Materials, Qatar University P.O. Box 2713 Doha Qatar
| | | | - Hafsa Mutahir
- Department of Chemical Engineering, College of Engineering, Qatar University Doha 2713 Qatar
| | - Mostafa H Sliem
- Center for Advanced Materials, Qatar University P.O. Box 2713 Doha Qatar
| | | | - Mohamed M Chehimi
- Université de Paris, ITODYS, UMR CNRS 7086 15 rue JA de Baïf 75013 Paris France
| | - Igor Krupa
- Center for Advanced Materials, Qatar University P.O. Box 2713 Doha Qatar
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2
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Facile synthesis of 4,4`-diaminodiphenysulfone cured oleo-epoxy/PPy-PSCeO2 blend nanocomposites for anticorrosive application by In-situ and solvent-less approach. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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3
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Lin X, Peng Q, Duan S, Zhang C, Chen X, Deng Z, Dou B, Zhang Y, Gao X, Fang Z. Corrosion inhibition of
Q235
steel by epoxy coatings containing
FG
@
ZIF
‐8. J Appl Polym Sci 2022. [DOI: 10.1002/app.53193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiuzhou Lin
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
| | - Qiang Peng
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
| | - Song Duan
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
| | - Chunjiang Zhang
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
| | - Xulei Chen
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
| | - Zhiqiang Deng
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
| | - Baojie Dou
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
- Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong China
- Chimie ParisTech, PSL University, CNRS Institut de Recherche de Chimie Paris (IRCP) Paris France
| | - Yingjun Zhang
- School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong China
| | - Xiulei Gao
- Corrosion Control Technology R&D Center Zhongshan Photoelectric Materials Co., Ltd Zibo China
| | - Zhiwen Fang
- Corrosion Control Technology R&D Center Zhongshan Photoelectric Materials Co., Ltd Zibo China
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4
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Branda F, Passaro J, Pauer R, Gaan S, Bifulco A. Solvent-Free One-Pot Synthesis of Epoxy Nanocomposites Containing Mg(OH) 2 Nanocrystal-Nanoparticle Formation Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5795-5802. [PMID: 35482845 PMCID: PMC9097534 DOI: 10.1021/acs.langmuir.2c00377] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Epoxy nanocomposites containing Mg(OH)2 nanocrystals (MgNCs, 5.3 wt %) were produced via an eco-friendly "solvent-free one-pot" process. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and thermogravimetric analysis (TGA) confirm the presence of well-dispersed MgNCs. HRTEM reveals the presence also of multisheet-silica-based nanoparticles and a tendency of MgNCs to intergrow, leading to complex nanometric structures with an intersheet size of ∼0.43 nm, which is in agreement with the lattice spacing of the Mg(OH)2 (001) planes. The synthesis of MgNCs was designed on the basis of a mechanism initially proposed for the preparation of multisheet-silica-based/epoxy nanocomposites. The successful "in situ" generation of MgNCs in the epoxy via a "solvent-free one-pot" process confirms the validity of the earlier disclosed mechanism and thus opens up possibilities of new NCs with different fillers and polymer matrix. The condition would be the availability of a nanoparticle precursor soluble in the hydrophobic resin, giving the desired phase through hydrolysis and polycondensation.
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Affiliation(s)
- Francesco Branda
- Department
of Chemical Materials and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
| | - Jessica Passaro
- Department
of Chemical Materials and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
| | - Robin Pauer
- Advanced
Materials and Surfaces Fibers, Empa Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dubendorf, Switzerland
| | - Sabyasachi Gaan
- Laboratory
for Advanced Fibers, Empa Swiss Federal
Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Aurelio Bifulco
- Department
of Chemical Materials and Industrial Production Engineering (DICMaPI), University of Naples Federico II, 80125 Naples, Italy
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5
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Mechanical and Moisture Barrier Properties of Epoxy-Nanoclay and Hybrid Epoxy-Nanoclay Glass Fibre Composites: A Review. Polymers (Basel) 2022; 14:polym14081620. [PMID: 35458370 PMCID: PMC9027511 DOI: 10.3390/polym14081620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 11/16/2022] Open
Abstract
Epoxy clay nanocomposites have been proven to have improved mechanical, thermal and physical properties over pristine matrix. Thus, the fields of application of epoxy-clay nanocomposites along with their hybrid glass/carbon fibre reinforced composites have grown tremendously during the last few decades. The present review paper covers the research work performed on epoxy clay nanocomposites. It includes the influence of the processing techniques and parameters on the morphology of the nanocomposite, the methods of characterization and the effects of adding nanoclay on the mechanical and physical properties of composite. The improvements in the liquid barrier properties brought about by the addition of nanoclay platelets to epoxy resin are discussed. The variation of physical and mechanical properties with nanoclay type and content are reviewed along with the effects of moisture uptake on these properties. The advances in the development, characterization and applications of hybrid glass fibre reinforced epoxy-clay nanocomposites are discussed. Findings of the research work on the influence of nanoclay addition and exposure to water laden atmospheres on the behaviour of the hybrid glass fibre epoxy-nanoclay composites are presented. Finally, the potential health and environmental issues related to nanomaterials and their hybrid composites are reviewed.
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6
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Thomas J, Thomas ME, Abraham J, Francis B, Ahmad Z, Patanair B, Saiter‐Fourcin A, Jaroszewski M, Rouxel D, Kalarikkal N, Thomas S. Exploring the reinforcing mechanism and micromechanical models for the interphase characteristics in melt mixed
XLPE‐fumed SiO
2
nanocomposites. J Appl Polym Sci 2022. [DOI: 10.1002/app.52366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jince Thomas
- Research and Post Graduate Department of Chemistry St. Berchmans College Changanassery India
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
| | | | - Jiji Abraham
- Department of Chemistry Vimala College (Autonomous) Thrissur India
| | - Bejoy Francis
- Research and Post Graduate Department of Chemistry St. Berchmans College Changanassery India
| | - Zakiah Ahmad
- Faculty of Civil Engineering Universiti Teknologi Mara Shah Alam Malaysia
| | - Bindu Patanair
- UNIROUEN, INSA Rouen, CNRS, GPM Normandie Univ Rouen France
| | | | - Maciej Jaroszewski
- Department of Electrical Engineering Fundamentals Wroclaw University of Science and Technology Wroclaw Poland
| | - Didier Rouxel
- Institut Jean Lamour, UMR CNRS7198 Universit é de Lorraine Vandoeuvre‐Lès Nancy France
| | - Nandakumar Kalarikkal
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
| | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
- School of Energy Materials Mahatma Gandhi University Kottayam India
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7
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Quantifying morphological and mechanical properties of thermoplastics elastomers by selective localization of nanofillers with different geometries. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127365] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Branda F, Bifulco A, Jehnichen D, Parida D, Pauer R, Passaro J, Gaan S, Pospiech D, Durante M. Structure and Bottom-up Formation Mechanism of Multisheet Silica-Based Nanoparticles Formed in an Epoxy Matrix through an In Situ Process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8886-8893. [PMID: 34275300 PMCID: PMC8397334 DOI: 10.1021/acs.langmuir.1c01363] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/08/2021] [Indexed: 05/25/2023]
Abstract
Organic/inorganic hybrid composite materials with the dispersed phases in sizes down to a few tens of nanometers raised very great interest. In this paper, it is shown that silica/epoxy nanocomposites with a silica content of 6 wt % may be obtained with an "in situ" sol-gel procedure starting from two precursors: tetraethyl orthosilicate (TEOS) and 3-aminopropyl-triethoxysilane (APTES). APTES also played the role of a coupling agent. The use of advanced techniques (bright-field high-resolution transmission electron microscopy, HRTEM, and combined small- and wide-angle X-ray scattering (SAXS/WAXS) performed by means of a multirange device Ganesha 300 XL+) allowed us to evidence a multisheet structure of the nanoparticles instead of the gel one typically obtained through a sol-gel route. A mechanism combining in a new manner well-assessed knowledge regarding sol-gel chemistry, emulsion formation, and Ostwald ripening allowed us to give an explanation for the formation of the observed lamellar nanoparticles.
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Affiliation(s)
- Francesco Branda
- Department
of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Naples 80125, Italy
| | - Aurelio Bifulco
- Department
of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Naples 80125, Italy
| | - Dieter Jehnichen
- Department
Nanostructured Materials, Leibniz-Institut
für Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
| | - Dambarudhar Parida
- Laboratory
for Advanced Fibers, Empa Swiss Federal
Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, St., Gallen 9014, Switzerland
| | - Robin Pauer
- Advanced
Materials and Surfaces, Empa, Swiss Federal
Laboratories for Materials Science and Technology, Dubendorf CH-8600, Switzerland
| | - Jessica Passaro
- Department
of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Naples 80125, Italy
| | - Sabyasachi Gaan
- Laboratory
for Advanced Fibers, Empa Swiss Federal
Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, St., Gallen 9014, Switzerland
| | - Doris Pospiech
- Department
Polymer Structures, Leibniz-Institut für
Polymerforschung Dresden e. V., Hohe Str. 6, Dresden 01069, Germany
| | - Massimo Durante
- Department
of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Naples 80125, Italy
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9
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Nisha P, Suresh S, Jayamoorthy K, Dhanalekshmi KI, Ravichandran C. Synthesis, spectral, thermal studies and dielectric behavior of functionalized TiO2-loaded diglycidyl epoxy nanocomposite film. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03362-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Diazonium Modification of Inorganic and Organic Fillers for the Design of Robust Composites: A Review. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01725-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
AbstractThis review focuses on fillers modified with diazonium salts and their use in composites. We reviewed scientific publications and presented information about such diazonium-modified fillers as boron nitride, carbon fillers, cellulose, clay, silica, titanium dioxide, and zeolite. The fillers were divided into two groups. The first group includes those that form covalent bonds with the polymer, while the second includes those that do not form them. This review indicates a tremendous impact of filler modification using diazonium salts on the properties of composites. The review presents examples of the impact of filler on such properties as thermal conductivity, thermal stability, and mechanical properties (e.g., interfacial shear strength, compressive strength, flexural strength). The presented review indicates the enormous potential of composites with diazonium-modified fillers in control drug release, antistatic coatings, electrode materials, photocatalysts, bone tissue engineering scaffolds, fuel cell applications, abrasive tools, and electromechanical strain sensor. We hope that this review will help both research groups and industry in choosing fillers for given types of polymers and obtaining composites with even better properties.
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11
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Wang H, Qi Q, Zhang Y, Chen S, Dong B, Zhu S, Hu Q, Guo Z. Anticorrosive Epoxy Nanocomposite Coatings Filled with Polyaniline-Functionalized Silicon Nitride Particles. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hongfen Wang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Qi Qi
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Yongxing Zhang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Shougang Chen
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Binbin Dong
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China
| | - Shidong Zhu
- School of Materials Science and Engineering, Xi′an Shiyou University, Xi′an, 710065, China
| | - Qian Hu
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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12
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Lasmi S, Zoukrami F, Marcos-Fernández ÁA, Guerba H. Influence of modified mesoporous silica SBA-15 and compatibilizer on the properties and structure of ethylene-vinyl acetate copolymer-based nanocomposites. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1784216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sofiane Lasmi
- Unité de Recherche Matériaux Emergents (URMES), Université Ferhat Abbas Sétif-1, Sétif, Algeria
| | - Fouzia Zoukrami
- Unité de Recherche Matériaux Emergents (URMES), Université Ferhat Abbas Sétif-1, Sétif, Algeria
| | - Ángel Antonio Marcos-Fernández
- Física de Polímeros, Elastómeros y Aplicaciones Energéticas, Grupo de Elastómeros, Instituto de Ciencia y Tecnología de Polímeros (ICTP), Madrid, Spain
| | - Hadjira Guerba
- Laboratoire de Génie des Procédés Chimiques (LGPC), Département de Chimie, Faculté des Sciences, Université Ferhat Abbas Sétif, Sétif, Algeria
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13
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14
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The Molecular and Macromolecular Level of Carbon Nanotube Modification Via Diazonium Chemistry: Emphasis on the 2010s Years. CHEMISTRY AFRICA 2020. [DOI: 10.1007/s42250-020-00144-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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A review of advances in the preparation and application of polyaniline based thermoset blends and composites. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02052-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
AbstractFor several decades, forming blend and composite of polyaniline (PANI) with insulating polymers has been a widely studied research area because of the potential applications of such blends, which have a unique combination of mechanical properties, the processability of conventional polymers and the electrical property of conducting polymers. The current review paper will emphasize PANI composites or blends with thermosetting polymer matrices. The enhanced electro-mechanical properties of the blends and composites depend on the uniform dispersion of the PANI particle in polymer matrix. Therefore, considerable studies have focused on improving the distribution of PANI particles within the thermoset matrices. In this review paper, all the parameters and conditions that influence the surface morphology and application of PANI thermoset blends and composites will be described systematically. Recent progress on PANI based thermoset system with multifunctional ternary composites research will be highlighted in this paper. Furthermore, encouraging applications of different PANI thermoset composites and blends are discussed, such as flame-retardant materials, lightning damage suppression, metal ion removal, anticorrosive coating, electromagnetic shielding, conductive adhesives, and sensing materials.
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16
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Sand Chee S, Jawaid M. The Effect of Bi-Functionalized MMT on Morphology, Thermal Stability, Dynamic Mechanical, and Tensile Properties of Epoxy/Organoclay Nanocomposites. Polymers (Basel) 2019; 11:polym11122012. [PMID: 31817284 PMCID: PMC6960896 DOI: 10.3390/polym11122012] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/13/2019] [Accepted: 10/22/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, the optimum filler loading to prepare epoxy/organoclay nanocomposites by the in-situ polymerization method was studied. Bi-functionalized montmorillonite at different filler loading (0.5, 1.0, 2.0, 4.0 wt %) was dispersed in epoxy resin by using a high shear speed homogenizer. The effect on morphology, thermal, dynamic mechanical, and tensile properties of the epoxy/organoclay nanocomposites were studied in this work. Wide-angle X-ray scattering (WAXS) and field emission scanning electron microscope (FESEM) studies revealed that possible intercalated structures were obtained in epoxy/organoclay nanocomposites. Thermogravimetric analysis (TGA) shows that epoxy/organoclay nanocomposites exhibit higher thermal stability at the maximum and final decomposition temperature, as well as higher char content, compared to pristine epoxy. The dynamic mechanical analysis (DMA) indicate that storage modulus (E′), loss modulus (E″), cross-link density and glass transition temperature (Tg) of the nanocomposites were improved with organoclay loading up to 1 wt %. Beyond this loading limit, the deterioration of properties was observed. A similar trend was also observed on tensile strength and modulus. We concluded from this study that organoclay loading up to 1 wt % is suitable for further study to fabricate hybrid nanocomposites for various applications.
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Affiliation(s)
- Siew Sand Chee
- Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
| | - Mohammad Jawaid
- Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
- Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh 145111, Saudi Arabia
- Correspondence: ; Tel.: +603-8946-6960
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17
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Irzhak VI, Dzhardimalieva GI, Uflyand IE. Structure and properties of epoxy polymer nanocomposites reinforced with carbon nanotubes. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1896-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Synthesis and Characterization of Dental Nanocomposite Resins Filled with Different Clay Nanoparticles. Polymers (Basel) 2019; 11:polym11040730. [PMID: 31013632 PMCID: PMC6524204 DOI: 10.3390/polym11040730] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 12/24/2022] Open
Abstract
Nanotechnology comprises a promising approach towards the update of dental materials.The present study focuses on the reinforcement ofdental nanocomposite resins with diverse organomodified montmorillonite (OMMT) nanofillers. The aim is to investigate whether the presence of functional groups in the chemical structure of the nanoclay organic modifier may virtually influence the physicochemical and/or the mechanical attitude of the dental resin nanocomposites. The structure and morphology of the prepared materials were investigated by means of wide angle X-ray diffraction and scanning electron microscopy analysis. Fourier transform infrared spectroscopy was used to determine the variation of the degree of conversion over time. Measurements of polymerization shrinkage and mechanical properties were conducted with a linear variable displacement transducer apparatus and a dynamometer, respectively. All the obtained nanocomposites revealed intercalated structures and most of them had an extensive filler distribution into the polymer matrix. Polymerization kinetics werefound to be influenced by the variance of the clay organomodifier, whilenanoclays with vinyl groups considerably increased the degree of conversion. Polymerization shrinkage was almost limited up to 50% by incorporating nanoclays. The absence of reactive groups in the OMMT structure may retain setting contraction atlow levels. An enhancement of the flexural modulus was observed, mainly by using clay nanoparticles decorated with methacrylated groups, along with a decrease in the flexural strength at a high filler loading. The overall best performance was found for the nanocomposites with OMMTs containing double bonds. The significance of the current work relies on providing novel information about chemical interactions phenomena between nanofillers and the organic matrix towards the improvement of dental restorative materials.
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19
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Saboor A, Khan AN, Jan R, Sharif S, Khan M. Mechanical, dielectric and EMI shielding response of styrene acrylonitrile, styrene acrylonitrile/polyaniline polymer blends, upon incorporation of few layer graphene at low filler loadings. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1648-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Jlassi K, Radwan AB, Sadasivuni KK, Mrlik M, Abdullah AM, Chehimi MM, Krupa I. Anti-corrosive and oil sensitive coatings based on epoxy/polyaniline/magnetite-clay composites through diazonium interfacial chemistry. Sci Rep 2018; 8:13369. [PMID: 30190528 PMCID: PMC6127100 DOI: 10.1038/s41598-018-31508-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/10/2018] [Indexed: 11/16/2022] Open
Abstract
Epoxy polymer nanocomposites filled with magnetite (Fe3O4) clay (B), named (B-DPA-PANI@Fe3O4) have been prepared at different filler loading (0.1, 0.5, 1, 3, 5 wt. %). The surface modification of clay by polyaniline (PANI) is achieved in the presence of 4-diphenylamine diazonium salt (DPA). The effects of the nanofiller loading on Tensile, mechanical and dielectric properties were systematically studied. Improved properties was highlighted for all reinforced samples. The addition of only 3 wt. % of the filler enhanced the tensile strength of the composites by 256%, and the glass transition temperature Tg by 37%. The dielectric spectra over a broad frequency showed a robust interface between the hybrid (B-DPA-PANI@Fe3O4) fillers and epoxy matrix. The results showed most significant improvement in corrosion inhibition using electrochemical impedance spectroscopy (EIS) in 3.5 wt % NaCl, as well as a significant response in oil sensing test. High charge transfer resistance of 110 × 106 Ω.cm2 using 3-wt % of filler was noted compared to 0.35 × 106 Ω.cm2 for the pure epoxy. The results obtained herein will open new routes for the preparation of efficient anticorrosion sensor coatings.
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Affiliation(s)
- Khouloud Jlassi
- Center for Advanced Materials, Qatar University, P. O. Box 2713, Doha, Qatar.
| | - A Bahgat Radwan
- Center for Advanced Materials, Qatar University, P. O. Box 2713, Doha, Qatar
| | | | - Miroslav Mrlik
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida T. Bati 5678, 760 01, Zlin, Czech Republic
| | - Aboubakr M Abdullah
- Center for Advanced Materials, Qatar University, P. O. Box 2713, Doha, Qatar
| | - Mohamed M Chehimi
- University Paris Est, CNRS, UMR7182, ICMPE, UPEC, F-94320, Thais, France
| | - Igor Krupa
- Center for Advanced Materials, Qatar University, P. O. Box 2713, Doha, Qatar.
- QAPCO Polymer Chair, Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar.
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Diazonium Salts: Versatile Molecular Glues for Sticking Conductive Polymers to Flexible Electrodes. SURFACES 2018. [DOI: 10.3390/surfaces1010005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Adhesion of polymers to surfaces is of the upmost importance in timely applications such as protective coatings, biomaterials, sensors, new power sources and soft electronics. In this context, this work examines the role of molecular interactions in the adhesion of polypyrrole thin films to flexible Indium Tin Oxide (ITO) electrodes grafted with aryl layers from various diazonium salts, namely 4-carboxybenzenediazonium (ITO-CO2H), 4-sulfonicbenzenediazonium (ITO-SO3H), 4-N,N-dimethylbenzenediazonium (ITO-N(CH3)2), 4-aminobenzenediazonium (ITO-NH2), 4-cyanobenzenediazonium (ITO-CN) and 4-N-phenylbenzenediazonium (ITO-NHPh). It was demonstrated that PPy thin layers were adherent to all aryl-modified surfaces, whereas adhesive failure was noted for bare ITO following simple solvent washing or sonication. Adhesion of polypyrrole was investigated in terms of hydrophilic/hydrophobic character of the underlying aryl layer as probed by contact angle measurements. It was found that sulfonic acid-doped polypyrrole (PPy-BSA) thin films were preferably deposited on the most hydrophobic surfaces. More importantly, the redox properties and electrochemical impedance of PPy were closely related to the hydrophobic character of the aryl layers. This work demonstrates that diazonium compounds are unique molecular glues for conductive polymers and permit to tune their interfacial properties. With robust, diazonium-based architectured interfaces, one can design high performance materials for e.g., sensors, printed soft electronics and flexible thermoelectrics.
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Belbekhouche S, Kebe SI, Mahouche-Chergui S, Guerrouache M, Carbonnier B, Jaziri M, Chehimi MM. Aryl diazonium-modified olive waste: A low cost support for the immobilization of nanocatalysts. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Msaadi R, Ammar S, Chehimi MM, Yagci Y. Diazonium-based ion-imprinted polymer/clay nanocomposite for the selective extraction of lead (II) ions in aqueous media. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sandomierski M, Strzemiecka B, Chehimi MM, Voelkel A. Reactive Diazonium-Modified Silica Fillers for High-Performance Polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11646-11654. [PMID: 27726385 DOI: 10.1021/acs.langmuir.6b02891] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We describe a simple way of modification of three silica-based fillers with in situ generated 4-hydroxymethylbenzenediazonium salt (+N2-C6H4-CH2OH). The rationale for using a hydroxyl-functionalized diazonium salt is that it provides surface-functionalized fillers that can react with phenolic resins. The modification of silica by diazonium salts was assessed using Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). FTIR spectroscopy permitted the tracking of benzene ring breathing and C-C. The absence of the characteristic N≡N stretching vibration in the 2200-2300 cm-1 range indicates the loss of the diazonium group. XPS results indicate a higher C/Si atomic ratio after the diazonium modification of fillers and the presence of π-π* C1s satellite peaks characteristic of the surface-tethered aromatic species. Adhesion of aryl layers to the silicas is excellent because they withstand harsh thermal and organic solvent treatments. Phenolic resins (used, for example, as binders in abrasive products) were filled with diazonium-modified silicas at 10-25 wt %. The reactivity of the fillers toward phenolic resins was evaluated by the determination of the flow distance. After annealing at 180 °C, the diazonium-modified silica/phenolic resin composites were mechanically tested using the three-point flexural method. The flexural strength was found to be up to 35% higher than that of the composites prepared without any diazonium salts. Diazonium-modified silica with surface-bound -CH2-OH groups is thus ideal reactive filler for phenolic resins. Such filler ensures interfacial chemical reactions with the matrix and imparts robust mechanical properties to the final composites. This specialty diazonium-modified silica will find potential application as fillers in the composites for the abrasive industry. More generally, aryl diazonium salts are a unique new series of compounds for tailoring the surface properties of fillers and tuning the physicochemical and mechanical properties of polymer composites.
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Affiliation(s)
- Mariusz Sandomierski
- Institute of Chemical Technology and Engineering, Poznan University of Technology , Berdychowo 4, 60-965 Poznań, Poland
| | - Beata Strzemiecka
- Institute of Chemical Technology and Engineering, Poznan University of Technology , Berdychowo 4, 60-965 Poznań, Poland
| | - Mohamed M Chehimi
- Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC , 2-8 rue Henri Dunant, Thiais 94320, France
| | - Adam Voelkel
- Institute of Chemical Technology and Engineering, Poznan University of Technology , Berdychowo 4, 60-965 Poznań, Poland
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Bakas I, Yilmaz G, Ait-Touchente Z, Lamouri A, Lang P, Battaglini N, Carbonnier B, Chehimi MM, Yagci Y. Diazonium salts for surface-confined visible light radical photopolymerization. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28241] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Idriss Bakas
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
- Equipe Matériaux Photocatalyse Et Environnement, Faculté Des Sciences, Université Ibn Zohr; B.P. 8106 Cité Dakhla Agadir Morocco
| | - Gorkem Yilmaz
- Department of Chemistry; Istanbul Technical University; Maslak Istanbul 34469 Turkey
| | - Zouhair Ait-Touchente
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | - Aazdine Lamouri
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | - Philippe Lang
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | - Nicolas Battaglini
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
| | | | - Mohamed M. Chehimi
- Univ Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086; 15 Rue J-A De Baïf Paris 75013 France
- Université Paris Est, ICMPE (UMR7182), CNRS, UPEC; Thiais 94320 France
| | - Yusuf Yagci
- Department of Chemistry; Istanbul Technical University; Maslak Istanbul 34469 Turkey
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Tiddia M, Mula G, Mascia M, Sechi E, Vacca A. Porous silicon–polyaniline hybrid composites synthesized through electroreduction of an aryldiazonium salt: preparation and photocurrent properties. RSC Adv 2016. [DOI: 10.1039/c6ra19868f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Porous Si–polyaniline composites were realized by electropolymerization with an underlayer of phenylamine. The composite showed photocurrent properties higher than those of porous Si or Si–polyaniline composites realized without underlayer.
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Affiliation(s)
- Mariavitalia Tiddia
- Dipartimento di Fisica
- Università degli Studi di Cagliari
- Cittadella Universitaria di Monserrato
- 09042 Monserrato
- Italy
| | - Guido Mula
- Dipartimento di Fisica
- Università degli Studi di Cagliari
- Cittadella Universitaria di Monserrato
- 09042 Monserrato
- Italy
| | - Michele Mascia
- Dipartimento di Ingegneria Meccanica
- Chimica e dei Materiali
- Università degli Studi di Cagliari
- 09123 Cagliari
- Italy
| | - Elisa Sechi
- Dipartimento di Ingegneria Meccanica
- Chimica e dei Materiali
- Università degli Studi di Cagliari
- 09123 Cagliari
- Italy
| | - Annalisa Vacca
- Dipartimento di Ingegneria Meccanica
- Chimica e dei Materiali
- Università degli Studi di Cagliari
- 09123 Cagliari
- Italy
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