Impulse-NMR study of polyvinyl chloride-glycerol systems

Abstract

Three systems of PVC-glycerol, prepared various methods have been studied, namely powders, pressed and milled samples. In the case of the powders a proportion of the glycerol was found to be sorbed on the surfaces of supermolecular structures whose size changed reversibly with the temperature. The other glycerol fills the vacancies between the supermolecular structures and form a pseudo-free phase. A molecular exchange takes place between these groups of molecules. Glycerol fills the vacancies with linear dimensions of 10-7-10-6m in the pressed samples while it is distributed in the milled samples as small associated in the polymer network and will move in strict cooperation with the macromolecular segments. © 1983.