Abstract
The frequency dependence of the dielectric properties and dc conductivity (σ dc ) of polyaniline samples that have been prepared in a conducting state by a chemical method using Fenton's reagent were investigated. These samples were prepared at constant molar ratio H2O2/aniline (r = 1) and at different concentrations of both H2O2 and aniline (0.2 M, 0.4 M, and 0.5 M). The measurements were carried out using the complex impedance technique in the frequency range 0.12 to 100 KHz at the temperature range from about 278 to 311 K. It has been found that the concentrations of H2O2 and aniline have a noticeable effect on the dielectric properties. All samples have only one activation energy for one phase of material except at 0.5 M, implying several activation energies and consequently several phases in the material.
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