A study of local crankshaft-type mobility in vitreous polyvinyl chloride and polyacrylonitrile by the method of conformational probes

Abstract

Secondary relaxation transitions and local conformational dynamics in polyacrylonitrile and polyvinyl chloride were studied by the method of conformational probes. Relaxation transitions at 210 and 260 K (polyvinyl chloride) and 165 K (polyacrylonitrile) were explained by freezing of "crankshaft-type" motions. © 2009 Pleiades Publishing, Ltd.