ELECTRICAL CONDUCTIVITY OF ELECTRODEPOSITED THIN FILM OF POLYPYRROLE/CNT NANOCOMPOSITES

Abstract

The conducting polypyrrole / functionalized carbon nanotubes (PPy/CNT) nanocomposites have been electrochemically deposited on stainless steel using 0.1 M aqueous solution of dodecylbenzene sulfonic acid (DBSA).10 wieght percentage of functionalized MWCNTs with respect to pyrrole was used to fabricate nanocomposites.The structure and morphology of the nanocomposites were studied by UV-Vis spectroscopy, Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM).The composites showed good interaction based on the shift to shorter wavelengths in the electronic transition, indicating the interaction between PPy and functionalized CNTs.The SEM images revealed the porous rough and granular morphology of pure polypyrrole whereas tubular form of nanocomposites indicating polypyrrole coating on CNTs.The electrical conductivity increases as the CNT % increases thus indicating that composites enhanced properties as compared to pure polypyrrole.