Characterization of conducting polypyrrole based insulating polymercomposites

The present study reveals with preparation methods, study of structural, optical and thermal properties of polypyrrole filled PMMA thin film composite. The surface morphology of PPy-PMMA thin films were analyzed using scanning electron microscopy (SEM). The FTIR study gave the signature of the presence of PPy in PMMA. From the analysis of absorption spectra the band gap of polypyrrole filled PMMA have been found to lie between 2.81 to 3.2eV. The decrease in band gap energy suggests a transition from insulating nature to semiconducting nature. Thermal stability of polypyrrole filled PMMA was investigated by TGA.