The role of unsaturations in the Gamma irradiation of crosslinkable polymers

摘要: Abstract Nowadays, the understanding of interaction ionizing radiations with polymeric materials is becoming increasingly important. It well known that many parameters regarding synthesis polymers noticeably affect irradiation process. In this work, an analysis effect type and position unsaturations in molecular structure crosslinkable performed. For such purpose, two solid semycristalline metallocenic ethylene 1-olefin copolymers (mEOC) which contain a low concentration from synthesis, their hydrogenated samples, were irradiated along liquid poly(dimethylsiloxane) (PDMS) homo containing different location vinyl groups, structurally tailored through anionic synthesis. The source was 60 Co, under vacuum at room temperature, all cases. results indicated terminal vinyls drastically accelerate crosslinking to lower doses, even much concentrations than other for both, mEOC PDMS, polymers.