| 초록 |
Polyolefins are very widely used, both as elastomers and rigid thermoplastics. Prior to the experiment, Poly(ethylene-ter-hexen-ter-divinylbenzene)(EHV) terpolymers containing divinylbenzene(DVB) side group prepared by a metallocene copolymerization using rac-Et(Ind)2ZrCl2/MAO catalyst system. This paper approach in the preparation of polyolefin graft and block copolymers, containing both polyolefin block and functional polymer block, with good control of molecular structure. In this study, We synthesized EHV-g-P(t-BS) and EHV-g-PS graft copolymer having tert-butylstyrene or styrene hard segment side chains using anionic graft-from polymerization. In addition, polyisoprene(PI) with vinyl groups was synthesized in the hard block side end. the pendent hydroxyl and carboxyl groups were introduced to PI by thiol-ene click reaction. Properties such as glass transition temperatures were measured relative to the change in yield. |
