Table of Contents Author Guidelines Submit a Manuscript
Advances in Condensed Matter Physics
Volume 2016, Article ID 4793434, 6 pages
http://dx.doi.org/10.1155/2016/4793434
Research Article

High Dielectric Constant Study of TiO2-Polypyrrole Composites with Low Contents of Filler Prepared by In Situ Polymerization

1Institute of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
2College of Science, Department of Physics and Astronomy, King Saud University, Riyadh 11421, Saudi Arabia
3College of Engineering, Department of Chemical Engineering, King Saud University, Riyadh 11421, Saudi Arabia
4Centre of Excellence in Solid State Physics, University of the Punjab, New Campus, Lahore 54590, Pakistan
5Industrial Catalysts Research Chair, King Saud University, Riyadh 11421, Saudi Arabia

Received 17 October 2015; Accepted 10 January 2016

Academic Editor: Victor V. Moshchalkov

Copyright © 2016 Khalil Ahmed 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

TiO2/polypyrrole composites with high dielectric constant have been synthesized by in situ polymerization of pyrrole in an aqueous dispersion of low concentration of TiO2, in the presence of small amount of HCl. Structural, optical, surface morphological, and thermal properties of the composites were investigated by X-ray diffractometer, Fourier transform infrared spectroscopy, field-emission scanning electron microscopy, and thermogravimetric analysis, respectively. The data obtained from diffractometer and thermal gravimetric analysis confirmed the crystalline nature and thermal stability of the prepared composites. The dielectric constant of 5 wt% TiO2 increased with filler content up to 4.3 × 103 at 1 kHz and then decreased to 1.25 × 103 at 10 kHz.