Electrochemical Formation of Polypyrrole-carboxymethylcellulose Conducting Polymer Composite Films

The electrochemical preparation of polypyrrole-carboxymethylcellulose (PPY-CMC) conducting polymer compos-ite films on indium tin oxide (ITO) glass electrode from an aqueous solution containing pyrrole monomer, p-toluenesulfonate electrolyte and carboxymethylcellulose insulating polymer is reported. The characterization byFourier transform infrared spectroscopy (FT-IR) shows that carboxymethylcellulose (CMC) has been successfullyincorporated into polypyrrole structure forming PPY-CMC polymer composite films. The conductivity of the pre-pared composite films was found to increase with increaseing CMC concentration in pyrrole solution. The opticalmicroscopic results show the influence of CMC concentration in the pyrrole solution over the morphological changesof the prepared films. The dynamic mechanical analysis (DMA) on the prepared PPY-CMC film reveals the higherplastic property of the PPY-CMC composite film.