Synthesis and Characterization of Electrically Conducting Polyaniline Doped with Glacial Acetic Acid (CH₃COOH) at Room Temperature
Pages 134-138
Omar Melad

DOI: http://dx.doi.org/10.6000/1929-5995.2015.04.03.1

Published: 28 October 2015

Abstract: Polyaniline (PANI) has been prepared by chemical oxidation method at room temperature and the effect of concentration of dopant Glacial Acetic Acid (CH₃COOH) on the structure of the polymer was investigated. Polymers prepared in absence and in the presence of varying concentrations of CH₃COOH were characterized using UV-visible, FTIR spectroscopy and conductivity measurements. In UV-visible spectra of PANIs recorded in DMSO revealed that absorption bands increases with increasing concentration of CH₃COOH. The FTIR spectra shows the absorption bands related to quinoid and benzenoid rings for the undoped and doped PANI in CH₃COOH indicating that the polymer is composed of amine and imine units. Highest conductivity value was obtained in presence of 1.0 M CH₃COOH indicating that the more preferable doping of PANI will be at this concentration of CH₃COOH. The effect of the temperature upon the conductivity of PANI synthesized with different concentrations of CH₃COOH has been studied.