Effect of the Degree of Crystallinity on Charge Relaxation in a Polyimide

The method of thermoactivation spectroscopy is used to study effect of the degree of crystallinity on the mechanisms of homocharge relaxation in poly((4,4'-bis(4-aminophenoxy)biphenyl)imido-1,3- bis(3,3'-4,4'-dicarboxyphenoxy)benzene films. Two regions of charge relaxation are found. At a temperature of 177°С (450 K), there is a maximum of the thermally stimulated depolarization current related to the intrinsic conductivity of the dielectric. In...