| 新型铁盐催化MMA的原子转移自由基聚合 |
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| 引用本文： | 马海芳,张贺新,杨 凤,张学全. 新型铁盐催化MMA的原子转移自由基聚合[J]. 沈阳化工学院学报, 2014, 0(1): 65-68 |
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| 作者姓名： | 马海芳 张贺新 杨 凤 张学全 |
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| 作者单位： | [1]沈阳化工大学材料科学与工程学院,辽宁沈阳110142 [2]中国科学院长春应用化学研究所,吉林长春130022 |
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| 摘 要： | 采用新型的铁盐催化体系实现甲基丙烯酸甲酯(MMA)的过量单体完成活化剂再生(generation of activators via monomer addition)的原子转移自由基聚合反应(GAMA ATRP).以FeBr3为催化剂、三苯基膦(TPP)或对茴香基二苯基膦(DPMPP)为配体、2-溴异丁酸乙酯(EBriB)为引发剂,利用原子转移自由基聚合反应合成窄分布的PMMA,并研究MMA的GAMA ATRP的聚合反应动力学.考察催化剂用量、配体种类等对聚合反应的影响.结果表明:聚合反应显示为一级动力学特征,聚合物分子量随转化率的提高而线性增长且分子量分布较窄(PDI1.5).通过核磁(1H-NMR)对所得聚合物PMMA的末端官能团进行表征,结果表明:所得的PMMA端基含有卤素,有继续引发聚合的可能,具有"活性"聚合的特征.
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| 关 键 词： | 甲基丙烯酸甲酯 铁盐催化体系 原子转移自由基聚合 |
Novel Iron-mediated Atom Transfer Radical Polymerization of MMA |
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| MA Hai-fang,ZHANG He-xin,YANG Feng,ZHANG Xue-quan. Novel Iron-mediated Atom Transfer Radical Polymerization of MMA[J]. Journal of Shenyang Institute of Chemical Technolgy, 2014, 0(1): 65-68 |
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| Authors: | MA Hai-fang ZHANG He-xin YANG Feng ZHANG Xue-quan |
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| Affiliation: | 1. Shenyang University of Chemical Technology, Shenyang 110142, China; 2. Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China) |
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| Abstract: | In this paper, novel iron-based catalyst systems were used to successfully carry out generation of activators via monomer addition atom transfer radical polymerization （ GAMA ATRP） of methyl meth- acrylate （MMA）. Using FeBr3 as the catalyst, triphenylphosphine （TPP） or Diphenyl （2-methoxyphenyl） phosphine （DPMPP） as the ligand, ethyl-2-bromoisobutyrate （ EBriB ） as the initiator, the PMMA with nar- row molecular weight distribution was prepared via GAMA ATRP. The effects of catalyst concentration and ligand were investigated. The results showed the polymerization reaction was a In＇st-order kinetic reaction,the molecular weight（Mn,GPC ） values of the polymers increased linearly with monomer conversion, and the molecular weight distribution was very narrow （ PDI 〈 1.5 ）. |
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| Keywords: | methyl methacrylate iron catalyst system atom transfer radical polymerization |
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