RELATIVE PERMITTIVITY AND ELECTRICAL-CONDUCTIVITY OF SOME DIVALENT METAL ALGINATE COMPLEXES

The influence of a frequency on the relative permittivity epsilon(r)' as well as the AC conductivity of metal alginate complexes (Ba2+, Sr2, Pb2+, Cd2- Or Zn2+ ions) as a function of temperature has been inves tigated. The average values of the activation energy obtained from the experimental data indicate that the electrical properties of the comp lexes under investigation are similar to those of semiconducting mater ials. The values of relative permittivity epsilon(r)' increase with te mperature until a maximum Value designated by gamma-relaxation is obta ined. The appearance of beta-relaxation as a small shoulder is discuss ed in terms of the movement of the side groups and the small units of the main chain which in turns allows the orientation of dipolar units in the applied electric field.