Chemical synthesis and characterization of highly soluble conducting polyaniline in mixtures of common solvents

Abstract

This work presents the synthesis and characterization of soluble and conducting polyaniline-poly(itaconic acid) PANI-PIA according to a chemical polymerization route. This polymerization pathway leads to the formation of doped polyaniline salts, which are highly soluble in a number of mixtures between organic common polar solvents and water, the solubility reaches 4 mg mL-1. The effect of synthesis parameters, such as doping level, on the conductivity was investigated and a study of the solubility and other properties of the resulting PANI salts were also undertaken. The maximum of conductivity was found equal to 2.48×10-4 S cm-1 for fully protonated PANI-EB. In addition, the synthesized materials were characterized by various methods, i.e., viscosity measurements, XRD analysis and FTIR and UV-Vis spectroscopy. Finally, TGA was performed to obtain some information concerning the thermal behaviour of the materials.