DIELECTRIC AND CONDUCTIVITY STUDIES OF BENZYL CYANIDE IN POLYMER MATRICES

Dielectric and conductivity properties of benzyl cyanide in polymer ma trix have been studied at varying temperatures in a frequency range of 200 to 10(5) Hz. Enthalpies of activation for higher and lower temper ature range have been found to be 2.0 kJ mol-1 and 39.2 kJ mol-1 respe ctively. Low value of enthalpy has been estimated due to the rotation of -CH2CN group attached to the benzene ring whereas enthalpy of 39.2 kJ mol-1 indicated molecular process. AC Conductivity being associated with dielectric dispersion has also been evaluated at various frequen cies and temperatures. A correlation of conductivity (sigma) with the frequency has been made. An estimate of activation energy for conducti vity has been studied.