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

作　　者：Jose Sebastian Eby T. Thachil Jobin Job Mathen Joseph Madhavan Prince Thomas Jacob Philip M. S. Jayalakshmy Shahrom Mahmud Ginson P. Joseph 

机构地区：[1]Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India [2]Department of Physics, Loyola College, Chennai, India [3]Department of Physics, St. Thomas College, Palai, India [4]Department of Instrumentation, Cochin University of Science and Technology, Kerala, India [5]School of Physics, Universiti Sains Malaysia, Minden, Malaysia

出　　处：《Open Journal of Composite Materials》2015年第3期79-91,共13页复合材料期刊（英文）

摘　　要：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.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 

分 类 号：O6[理学—化学]