原子转移自由基悬浮聚合制备PVC-g-PMMA共聚物  

Synthesis of PVC-g-PMMA by Atom Transfer Radical Suspension Polymerization

作　　者：张学健[1] 张凯琳[1] 冯莺[1] 赵季若[1,2] 王玉玲[1] 

机构地区：[1]橡塑材料与工程教育部重点实验室,青岛科技大学高分子科学与工程学院,青岛266042 [2]中国科学院长春应用化学研究所高分子化学与物理国家重点实验室,长春

出　　处：《应用化学》2006年第5期543-547,共5页Chinese Journal of Applied Chemistry

摘　　要：研究了聚氯乙烯大分子引发剂在四水合氯化亚铁/三苯基膦催化下,通过原子转移自由基悬浮聚合制备PVC-g-PMMA共聚物的反应,考察了悬浮介质的组成对聚合活性的影响。通过改变悬浮介质的组成,实现了聚氯乙烯大分子引发甲基丙烯酸甲酯原子转移自由基“活性”/可控悬浮聚合。采用IR、NMR、GPC技术对共聚物结构进行了表征。The atom transfer radical suspension polymerization （ATRP） of methyl methacrylate （MMA） initiated by poly （vinyl chloride） （PVC） and catalyzed by iron dichloride tetrahydrate/triphenyl phosphine complexes was studied in different suspension systems at 80℃. The systems included ethanol, toluene/ ethanol, toluene/H2O, H2O, H2O/Poly（vinyl alcohol）（PVA）, and H2O/PVA/Dioctyl phthalate（DOP）. A linear dependence of In [ M0]/[ M] on reaction time was observed for only two suspension systems, toluene/ ethanol and H2O/PVA/DOP, and a linear increase with reaction time of the number average molecular weight of copolymer PVC-g-PMMA was observed. The structures of the copolymers were characterized by IR, ^1H NMR, GPC. The grafting efficiency of MMA were 6.7%, 17.8%, 26. 0%, 35.1%, respectively after polymerization of 6, 15, 21, 27 h.

关 键 词：聚氯乙稀 甲基丙烯酸甲酯 原子转移自由基悬浮聚合 

分 类 号：O631[理学—高分子化学]