CAJ | 학술논문

以溴异丁酸对硝基苄酯为引发剂、溴化亚铜(CuBr)/2,2'-联吡啶为催化体系进行了甲基丙烯酸甲酯的原子转移自由基聚合;以对硝基溴化苄为引发剂、溴化亚铜(CuBr)/2,2'-联吡啶为催化体系进行了苯乙烯的原子转移自由基聚合;将得到的端硝基聚合物进一步还原,制得端氨基聚合物.结果表明,上述两个聚合过程均为活性自由基聚合过程,得到窄分子量分布的聚合物;~1H-NMR分析表明,得到的端氨基聚合物链的α端都有1个氨基,ω端都有1个溴原子,还原过程没有破坏原有的聚合物链结构.
이추이정산대초기변지위인발제、추화아동(CuBr)/2,2'-련필정위최화체계진행료갑기병희산갑지적원자전이자유기취합;이대초기추화변위인발제、추화아동(CuBr)/2,2'-련필정위최화체계진행료분을희적원자전이자유기취합;장득도적단초기취합물진일보환원,제득단안기취합물.결과표명,상술량개취합과정균위활성자유기취합과정,득도착분자량분포적취합물;~1H-NMR분석표명,득도적단안기취합물련적α단도유1개안기,ω단도유1개추원자,환원과정몰유파배원유적취합물련결구.
Atom transfer radical polymerization (ATRP) of methyl methacrylate initiated by p-nitrobenzyl α-bro-moisobutylate and ATRP of styrene initiated by 4-nitrobenzyl bromide were carried out using CuBr/2,2'-bipyridine as catalyst system. It was found that controlled radical polymerization processes were involved in both of the reac-tions. The resulting polystyrene and poly (methyl methacrylate) with terminal nitro-groups had narrow molecular weight distributions. The terminal nitro-groups of the polymers were converted to amino-groups through reduction in acetone with Fe and hydrochloric acid.