Iterative evaluation of thermally stimulated depolarization current peak parameters in polymers: A dipolar interaction approach to molecular dipole relaxation

An approach for the dipole relaxation in polymers is treated considering the dipole–dipole interaction between the molecules. The thermally stimulated depolarization peak parameters, i.e., the activation energy E, the pre-exponential factor τ0, and the dipole interaction strength parameter q, were evaluated using the iterative technique. Good results are obtained in comparison with other methods. A linear relationship between the activation energy and the logarithm of the pre-exponential factor of the relaxation times is existing confirming the operation of the compensation law.