Green Stereoregular Polymerization of Poly(methyl methacrylate)s Through Vesicular Catalysis  

作　　者：Beike Cai Shaodong Zhang Yongfeng Zhou 

机构地区：[1]School of Chemistry and Chemical Engineering,Frontiers Science Center for Transformative Molecules,State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240

出　　处：《CCS Chemistry》2022年第4期1337-1346,共10页中国化学会会刊（英文）

基　　金：financially supported by the National Natural Science Foundation of China(21890730,21890733,and 51773115);the Program for Basic Research of Shanghai Science and Technology Commission(19JC1410400).

摘　　要：Stereoselective polymerization can yield polymers with specific tacticity and properties,and it is an essential topic throughout polymer synthesis history.Herein,we report for the first time on a vesicular catalysis method to realize the green stereoregular polymerization of isotactic-rich poly(methyl methacrylate)(PMMA)in water and at ambient temperature and pressure,namely by conducting the polymerization of MMA monomers in the confined 5-10 nm thick hydrophobic layers of hyperbranched polymer vesicles.The isotactic degree of the as-prepared PMMAs increases from 12% to 40% with the decrease of vesicle size from 840 to 85 nm in hydrodynamic diameter(Dh)due to the conformation confinement effect of MMA monomers inside the thin vesicle membranes through a curvature-dependent way.The present work has extended the scope of green chemistry,and it also represents a new application of polymer vesicles in stereoregular polymerization.

关 键 词：polymer vesicles stereoregular polymerization green chemistry isotactic PMMA hyperbranched polymers 

分 类 号：O63[理学—高分子化学]