Studies on Reactions of Polypropyrene. VI. The Thermal Degradation of Polypropylene Accelerated by the Fine Powdery Polymer with Closslinkage

Abstract

The thermal degradation of polypropylene was investigated in the presence of the fine powdery polymer with crosslinkage by the use of an extruder under a nitrogen atmosphere. The fine powdery polymer was thus found to be effective as an accelerator for the thermal degradation of polypropylene. The fine powdery polymer used was prepared by the emulsion polymerization of some vinyl monomers and divinyl benzene or by the polymerization of glycidyl methacrylate and divinyl benzene in n-heptane. The fine powdery polymer consisting of glycidyl methacrylate and divinyl benzene was preferable to that with no reactive functional group, because of the reactivity of the glycidyl group. The polypropylene was modified and made dyeable by the thermal degradation accelerated by the fine powdery polymer.