Effect of chromium chloride (CrCl2) on the electrical properties for (PVA-PVP-CrCl2) films.

Abstract

In this study, the samples have been prepared by using casting method from adding chromium chloride to poly vinyl alcohol and poly vinyl pyrrolidone with different weight percentages (3,6 and 9) wt.%. The D.C electrical properties have been studied with temperature (50-90)^oC, also the A.C electrical properties have been investigated with frequency ranged from (100- 5*10⁶) Hz at room temperature. Results showed that the D.C electrical conductivity increase with increasing of concentration also the activation energy changed with increasing of concentration, as well as the dielectric constant and dielectric loss decrease with increasing of frequency but the A.C electrical conductivity increase with increasing of frequency, generally the dielectric constant, dielectric loss and A.C electrical conductivity increase with increasing of concentration for all samples.

Keywords:(D.C, A.C) electrical properties, (PVA-PVP) composites, chromium chloride.