期刊
COMPOSITES PART B-ENGINEERING
卷 47, 期 -, 页码 314-319出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2012.10.029
关键词
Polymer-matrix composites (PMCs); Nanostructure; Hybrid; Electrical properties
资金
- DST [SR/S3/ME/022/2010-(G)]
- Ministry of Communication and Information Technology
- Council of Scientific and Industrial Research (CSIR)
In this study, the dielectric properties of PVA/ZnO nanocomposites films were evaluated. The composites were prepared by a solution casting technique. The dispersion and functionalization of the ZnO nanoparticles in the composite films were characterized by spectroscopic technique. The surface morphology of the PVA/ZnO nanocomposites films were elucidated using AFM. The charge transport properties were evaluated based on the dielectric and impedance spectroscopy techniques. Low ZnO loading composite shows low dielectric value at higher frequency and behaves as a lossless material. The complex impedance spectra suggest the change in conductivity, due to the change in bulk resistance of the materials and less relaxation time. Thus, all PVA/ZnO nanocomposites behave as lossless materials above 10(6) Hz indicating the composites are useful in microwave application. (c) 2012 Elsevier Ltd. All rights reserved.
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