Abstract
Studies of the correlation between the magnitude and time or frequency dependence of the physical properties of polymers on the one hand and the chemical structure of the macromolecules on the other has led to the establishment of a truly interdisciplinary area of research, namely the “molecular physics of polymers” [1]. In general, these studies are carried out using relaxation experiments. In this field dielectric and mechanical measurements have made a real contribution to our understanding of the nature of molecular motion and its correlation with bulk properties.