Dielectric and related molecular processes in polymers

A comprehensive knowledge of the nature and origin of dielectric polarizati on and electrical conduction in viscoelastic polymers requires consideratio ns of multiplicity of interactions of the polymer chains and their fine str ucture behavior. Molecular motions in polymers involve the concept of 'rept ation' in which a polymer chain moves in a fixed network of obstacles. The behavior of dielectric relaxation and electrical properties with ac and de fields need to be correlated with the viscoelastic molecular motions of the polymer chains.