原子转移自由基聚合(ATRP)制备高密度端羟基聚氧乙烯梳状嵌段聚合物  

Preparation of Comb-like Block Polymer Hydroxy-capped Poly(ethylene glycol)methacrylate with High Density via Atom Transfer Radical Polymerization

作　　者：李晓林[1] 计剑[1] 沈家骢[1] 

机构地区：[1]浙江大学高分子科学与工程系,杭州310027

出　　处：《高等学校化学学报》2005年第2期388-390,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 0 1740 3 5 )资助

摘　　要：A novel hydroxy-capped comb-like block polymer, poly[poly(ethylene glycol)](HCPEG), was prepared via atom transfer radical polymerization(ATRP) of α-methylacryloyl-ω-hydroxyl-poly(ethylene glycol). The polymerization kinetics of the PHPEGMA was studied by gel permeation chromatography and 1H NMR. The semilogarithmic plot of monomer conversion vs. reaction time increases linearly before the conversion is up to more than 70% and the number-average molecular weights(M_n) by GPC increased linearly with increase of the monomer conversion up to 100%, while the polydispersity index remained fairly narrow with M_w/M_n<1.2.A novel hydroxy-capped comb-like block polymer, poly[poly(ethylene glycol)](HCPEG), was prepared via atom transfer radical polymerization(ATRP) of α-methylacryloyl-ω-hydroxyl-poly(ethylene glycol). The polymerization kinetics of the PHPEGMA was studied by gel permeation chromatography and 1H NMR. The semilogarithmic plot of monomer conversion vs. reaction time increases linearly before the conversion is up to more than 70% and the number-average molecular weights(M_n) by GPC increased linearly with increase of the monomer conversion up to 100%, while the polydispersity index remained fairly narrow with M_w/M_n<1.2.

关 键 词：原子转移自由基聚合 α-甲基丙烯酰基-α-羟基-低聚聚乙二醇 梳状聚合物 

分 类 号：O631[理学—高分子化学]