| 초록 |
Graft polymer can be made by grafting to, grafting from and grafting through method. Among them, grafting through called macromonomer method is a simpler way to make graft polymer. In this study, the living anionic polymerization of isoprene was carried out under high vacuum using s-BuLi and heptane as initiator and solvent. Then, cis-1,4-polyisoprene macromonomer having chain-end functionalized with styrene was synthesized by sequentially introducing 1,1-diphenylethylene and 4-(chloromethyl) styrene to living cis-1,4-polyisoprene. Poly(styrene-g-isoprene) was synthesized by radical copolymerization of macromonomer and styrene. Hydrogenation of polyisoprene chain performed by diimide reduction. The synthesis of macromonomer, copolymerization and hydrogenation were analyzed by 1H-NMR, GPC and FT-IR. Based on the results of this analysis, it could confirm the synthesis of graft polymer and the progress of hydrogenation was varied by reaction time. |
