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Preparation and Characterization of ZnSe/EVA Nanocomposites for Photovoltaic Modules

Journal of Minerals and Materials Characterization and Engineering 2015年第4期3卷 215-224页

作者： Jose Sebastian eby thomas thachil Jobin Job Mathen Augustine J. Edakkara Nelson Kuriakose Ginson P. Joseph Joby Sebastian Department of Polymer Science & Rubber Technology Cochin University of Science and Technology Kerala India Department of Physics Loyola College Chennai Tamilnadu India Department of Physics St. Thomas College Pala Kerala India Department of Physics St. Thomas College Thrissur Kerala India

ZnSe Nanoparticles were synthesized by solvothermal method and the particle was characterized by Transmission Electron Microscopy. The polymer nanocomposite of 2% and 4% ZnSe/EVA was fabricated by direct sonicator method. The nanocomposites were characterized by UV-Vis-NIR and FT-IR spectroscopy. The thermal behaviour of the samples was also investigated and we found that the thermal stability of the composites increased with increasing the filler concentrations. The mechanical properties such as tensile strength, peel strength and refractive index of the samples were also studied and reported for the first.

关键词： EVA ZnSe TG-DTA Refractive Index Peel Strength Tensile Strength

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Enhancement in the Electrical and Thermal Properties of Ethylene Vinyl Acetate (EVA) Co-Polymer by Zinc Oxide Nanoparticles

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Open Journal of Composite Materials 2015年第3期5卷 79-91页

作者： Jose Sebastian eby T. thachil Jobin Job Mathen Joseph Madhavan Prince thomas Jacob Philip M. S. Jayalakshmy Shahrom Mahmud Ginson P. Joseph Department of Polymer Science and Rubber Technology Cochin University of Science and Technology Kerala India Department of Physics Loyola College Chennai India Department of Physics St. Thomas College Palai India Department of Instrumentation Cochin University of Science and Technology Kerala India School of Physics Universiti Sains Malaysia Minden Malaysia

EVA/ZnO nanocomposites of 1%, 2% and 4% ZnO were fabricated by direct probe sonicator method. The ZnO nanopowders were prepared by solvothermal method. As the particle size of the filler incorporated to the polymer matrix decreases, the properties of the polymer-filler interface show dominance over its bulk properties. The dielectric constant and dielectric loss of the composites at ambient temperatures are found to decrease with increasing frequency. The thermal analysis using TGA-DTA is also performed and it is found that the thermal stability of the nanocomposites increases with increasing the filler concentrations. The thermal parameters such as thermal diffusivity (α) and thermal effusivity (e), the thermal conductivity (k) and heat capacity (Cp) were studied using photopyroelectric technique. The band gap of the samples was also determined and found to decrease with increasing filler concentrations. The tensile strength and peel strength of the samples were also investigated and it is found to increase with small inclusion of filler material.

关键词： Composite Materials Polymers Differential Thermal Analysis (DTA) Dielectric Properties

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