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Dielectric properties of novel PVA/ZnO hybrid nanocomposite films

Roy, Aashis S and Gupta, Satyajit and Sindhu, S and Parveen, Ameena and Ramamurthy, Praveen C (2013) Dielectric properties of novel PVA/ZnO hybrid nanocomposite films. In: COMPOSITES PART B-ENGINEERING, 47 . pp. 314-319.

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Official URL: http://dx.doi.org/10.1016/j.compositesb.2012.10.02...

Abstract

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.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to ELSEVIER SCI LTD, ENGLAND
Keywords: Polymer-matrix composites (PMCs);Nanostructure;Hybrid;Electrical properties
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Depositing User: Francis Jayakanth
Date Deposited: 22 Mar 2013 07:27
Last Modified: 22 Mar 2013 07:27
URI: http://eprints.iisc.ac.in/id/eprint/46151

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