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International Journal of Polymer Science
Volume 2013 (2013), Article ID 307525, 7 pages
http://dx.doi.org/10.1155/2013/307525
Research Article

Synthesis, Electrical Conductivity, and Dielectric Behavior of Polyaniline/V2O5 Composites

1Department of Physics, Jamia Millia Islamia, New Delhi 110025, India
2Material Science Group, Inter University Accelerator Centre, New Delhi 110025, India

Received 31 March 2013; Accepted 12 June 2013

Academic Editor: Enrique Vigueras-Santiago

Copyright © 2013 Shama Islam et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Conducting polymer composites of polyaniline/vanadium pentaoxide PANI/V2O5 (with different initial weight percentage of V2O5) has been synthesized by in situ polymerization method. DC conductivity of compressed pellets has been analyzed in the temperature range 300–550 K and was found to increase with V2O5 doping. This increase in conductivity is mainly due to band conduction. It has also been observed that the dielectric constant and dielectric loss increase with the level of doping of V2O5 but remain independent of the frequency (50 KHz–1 MHz). X-ray diffraction pattern shows some order of crystallinity of composites due to interaction of polyaniline with V2O5. UV-visible spectroscopy shows an increase in the optical band gap with doping.