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首页> 外文期刊>Journal of Applied Polymer Science >Atom transfer radical polymerization grafting of highly functionalized polystyrene and poly(4-methylstyrene) macroinitiators with tert-butyl acrylate
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Atom transfer radical polymerization grafting of highly functionalized polystyrene and poly(4-methylstyrene) macroinitiators with tert-butyl acrylate

机译：高度官能化的聚苯乙烯和聚（4-甲基苯乙烯）大分子引发剂与丙烯酸叔丁酯的原子转移自由基聚合接枝

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摘要

Two monodisperse graft copolymers, poly(4-methylstyrene)-graft-poly(tert-butyl acrylate) [numb er-average molecular weight (M-n) = 37,500, weight-average molecular weightumber-average molecular weight (M-w/M-n) = 1.12] and polystyrene-graft-poly(tert-butyl acrylate) (M-n = 72,800, M-w/M-n = 1.12), were prepared by the atom transfer radical polymerization of tert-butyl acrylate catalyzed with Cu(I) halides. As macroinitiators, poly{(4-methylstyrene)-co-[(4-bromomethyl)styrene]} and poly{styrene-co-[4-(1-(2-bromopropionyloxy)ethyl)styrene]}, carrying 40% of the bromoalkyl functionalities along the chain, were used. The dependencies of molecular parameters on monomer conversion fulfilled die criteria for controlled polymerizations. In contrast, the dependencies of monomer conversion versus time were nonideal; possible causes were examined. (C) 2002 Wiley Periodicals, Inc. [References: 22]
机译：两种单分散接枝共聚物，聚（4-甲基苯乙烯）-接枝-聚（丙烯酸叔丁酯）[平均分子量（Mn）= 37,500，重均分子量/数均分子量（Mw / Mn） ＝ 1.12]和通过卤化铜（I）催化的丙烯酸叔丁酯的原子转移自由基聚合制备聚苯乙烯-接枝-聚丙烯酸叔丁酯（Mn ＝ 72,800，Mw / Mn ＝ 1.12）。作为大分子引发剂，聚{（4-甲基苯乙烯）-co-[（4-溴甲基）苯乙烯]}和聚{苯乙烯-co- [4-（1-（2-溴丙酰氧基）乙基）苯乙烯]}载有40％的使用沿链的溴代烷基官能团。分子参数对单体转化率的依赖性满足了受控聚合的标准。相反，单体转化率对时间的依赖性不理想。检查了可能的原因。 （C）2002 Wiley Periodicals，Inc. [参考：22]

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