STUDYING THE CONDUCTIVITY OF POLY(VINYL CHLORIDE) USING 2-(SUB.)-5-[3-(5-NITRO-FUR-2-YL)-PROPEN-2-YLDIENE]AMINO –1,3,4THIDIAZOLES AS ADDITIVES BY MEASURING FORBIDDEN ENERGY GAP

Abstract

Optical properties such as direct and indirect optical energy gap, and optical absorption edge were investigated in pure and doped Poly (vinyl chloride) films from their optical absorption spectra in the 200–600 nm wavelength regions. The direct optical energy gap for pure Poly(Vinyl Chloride) lies at 5.7 eV while it ranges from 4.65 to 5.22 eV for different composition films. Similar behavior was observed for the indirect optical energy gap and absorption edge. It was found that the energy gaps and band edge values shifted to higher energies on doping with 2-(sub.)-5-[3-(5-nitro-fur-2-yl)-propen-2-yldiene] amino –1,3,4-thidiazoles. Measurements of the conductivity were made to investigate the order of conductivity and charge transport in this polymer electrolyte