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	含溴双官能团引发剂引发原子转移自由基嵌段共聚; ATOM TRANSFER RADICAL BLOCK COPOLYMERIZATION USING 1,4-DIBROMOMETHYLBENZENE AS DIFUNCTIONAL INITIATOR
	邹友思 ; 庄荣传 ; 邱志平 ; 戴李宗
	2001-01
关键词	原子转移自由基聚合 嵌段共聚 聚甲基丙烯酸酯 聚苯乙烯 atom stransfer radical polymerization block copolymerization polystyrene polymethacryla
英文摘要	[中文文摘]合成了对二溴甲基苯作为原子转移自由基聚合的双官能团引发剂 ,以对二溴甲基苯 /溴化亚铜 /联吡啶 (摩尔比 1/ 2 / 4 )为引发体系 ,进行极性单体甲基丙烯酸酯和非极性单体苯乙烯及不同的甲基丙烯酸酯之间的原子转移自由基嵌段共聚 ,得到了实测分子量与设计分子量相近 ,分子量分布小于 1.8的PEMA- PS- PEMA,PBMA- PS- PBMA,PMMA- PBMA- PMMA等多种三嵌段共聚物。[英文摘要]Dibromomethylbenzene has been successfully used as new difunctional initiator in the atom transfer radical block copolymerization of styrene(St) and ethyl methacrylate(EMA) or butyl methacrylate(BMA), methyl methacrylate(MMA) and BMA. In the first step one of the monomers was polymerized in bulk using the initiating system Dibromomethylbenzene/CuBr/2,2′ bipyridine in a mole ratio of 1∶2∶4 at 90 ℃. Subsequently the resulting polymers with active bromo end group structures were used as macroinitiators for the polymerization of the second monomer under same conditions. The polymerizations were well controlled with a linear increase of molecular weights (Mn) with conversion and relatively low poly dispersities throughout the reactions. The triblock copolymers of BMA and St, EMA and St, MMA and BMA with predicted molecular wight(10000ï½ 50000) and narrower molecular weight distribution (1. 2ï½ 1. 7) were obtained. It is found that Stonly can beuseds the first monomer when methacrylate is copolymerized with St.
语种	中文
出版者	四川大学
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/2980]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	邹友思,庄荣传,邱志平,等. 含溴双官能团引发剂引发原子转移自由基嵌段共聚, ATOM TRANSFER RADICAL BLOCK COPOLYMERIZATION USING 1,4-DIBROMOMETHYLBENZENE AS DIFUNCTIONAL INITIATOR[J],2001.
APA	邹友思,庄荣传,邱志平,&戴李宗.(2001).含溴双官能团引发剂引发原子转移自由基嵌段共聚..
MLA	邹友思,et al."含溴双官能团引发剂引发原子转移自由基嵌段共聚".(2001).

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