Improvement in physical properties of poly(vinyl chloride) by radiation‐induced graft copolymerization with mixed monomers

摘要

AbstractGamma‐ray‐induced graft copolymerization of butadiene with vinyl monomers onto PVC was attempted to improve the physical properties of PVC. The Izod impact strength was increased from 2 kg·cm/cm2to more than 100 kg·cm/cm2by grafting ca. 10 butadiene. But the tensile strength and melt flow were decreased by the grafting. The electron micrograph showed that the mass of polybutadiene in the graft copolymer had a convenient diameter (0.1–1 μ) for absorbing the impact energy. The weatherability of PVC grafted with butadiene was improved by cografting of butadiene with acrylates and methacrylates which had long sid