Table of Contents
Journal of Polymers
Volume 2014, Article ID 827043, 11 pages
http://dx.doi.org/10.1155/2014/827043
Research Article

Poly Meta-Aminophenol: Chemical Synthesis, Characterization and Ac Impedance Study

1PG & Research Department of Chemistry, Auxilium College, Vellore, Tamil Nadu 632006, India
2Department of Physics, Martin Luther University of Halle-Wittenberg, 06120 Halle, Germany

Received 14 November 2013; Accepted 28 November 2013; Published 19 January 2014

Academic Editor: Yves Grohens

Copyright © 2014 Thenmozhi Gopalasamy 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

The present work is an investigation of AC impedance behaviour of poly(meta-aminophenol). The polymer was prepared by oxidative chemical polymerization of meta-aminophenol in aqueous HCl using ammonium persulfate as an oxidant at 0–3°C. The synthesized polymer was characterized by GPC, Elemental analysis, UV-VIS-NIR, FT-IR, 1H NMR, XRD, SEM, and TGA-DTA. The AC conductivity and dielectric response were measured at a temperature range from 303 to 383 K in the frequency range of 20 Hz to 106 Hz. The AC conductivity data could be described by the relation , where the parameter “ ” and values decrease in the entire range of study and hence follow Correlated Barrier Hopping conduction mechanism. Both dielectric constant and dielectric loss increase with the decrease of frequency exhibiting strong interfacial polarization at low frequency and the dissipation factor also decreases with frequency. Complex electric modulus and dissipation factor exhibit two relaxation peaks, indicating two-phase structure as indicated by a bimodal distribution of relaxation process. The activation energies corresponding to these two relaxation processes were found to be 0.07 and 0.1 eV.