Effect of Temperature and Doping Ratios on Electrical Conductivity of Polymer Blend Films of PluronicF127 and Polyvinyl Alcohol with Flavonoid Extract of Hibiscus Sabdariffa (Roselle)

Abstract

Electrical conductivity of polymer blend films doped with different ratios of flavonoid extract of Hibiscus Sabdariffa (Roselle) (0.03, 0.05, 0.07, 0.09, and 0.12) % wt., were studied. The composite films prepared using solvent casting method. The result showed that the conductivity increased with increasing temperature and doping ratios. The values of activation energy decreased with increasing temperature and doping ratios of flavonoid for all ratios except that of (0.12%) doping, so, it was concluded that the ratio (0.09%) is the best appropriate one for doping.