| 基于RAFT过程的MMA可控自由基聚合及嵌段共聚物的合成 |
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| 引用本文： | 何翠莲,姚洪伟. 基于RAFT过程的MMA可控自由基聚合及嵌段共聚物的合成[J]. 青岛大学学报(工程技术版), 2007, 22(1): 54-57 |
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| 作者姓名： | 何翠莲 姚洪伟 |
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| 作者单位： | 青岛大学化学化工与环境学院,山东,青岛,266071;青岛大学化学化工与环境学院,山东,青岛,266071 |
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| 摘 要： | 采用s,s’-二(α-二甲基乙酸羟乙酯)三硫代碳酸酯调控甲基丙烯酸甲酯(MMA)进行可逆加成断裂链转移自由基聚合(RAFT),研究结果表明,该聚合具有活性可控聚合的特征,聚合动力学呈一级线性关系,聚合物的数均相对分子质量随转化率的增加线性增加,得到数均相对分子质量可控、相对分子质量分布窄的聚合物。以得到的聚合物PM-MA作为大分子RAFT自由基聚合试剂,以甲基丙烯酸丁酯(BA)为单体进行扩链反应,得到嵌段共聚物PMMA-b-PBA。
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| 关 键 词： | 三硫代碳酸酯 RAFT 活性自由基聚合 遥爪型聚合物 |
| 文章编号： | 1006-9798（2007）01-0054-04 |
| 收稿时间： | 2006-09-20 |
| 修稿时间： | 2006-09-202007-12-19 |
Reversible Addition and Fragmentation Chain Transfer Free-radical Polymerization of Methyl Methacrylate and Synthesis of Derived Block Polymer |
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| HE Cui-lian,YAO Hong-wei. Reversible Addition and Fragmentation Chain Transfer Free-radical Polymerization of Methyl Methacrylate and Synthesis of Derived Block Polymer[J]. Journal of Qingdao University(Engineering & Technology Edition), 2007, 22(1): 54-57 |
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| Authors: | HE Cui-lian YAO Hong-wei |
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| Affiliation: | Colledge of Chemical Engineering and environment, Qingdao University, Qingdao 266071, China |
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| Abstract: | s,s'-bis(2-hydroxyethyl-2'-dimethylacrylate) trithiocarbonate was used as the chain transfer agent in reversible addition-fragmentation chain transfer(RAFT) polymerizations of methyl methacrylate.The polymerization showed "living"/controlled characteristics.Reaction kinetics was first order and linear.Relative molecular mass of polymer was controllable and increased linearly with monomer conversion.The polymer obtained was narrow in polydispersity index.The derived well-controlled block copolymer(PMMA-b-PBA) was prepared by using the above obtained polymer as macromolecular RAFT agent and BA as second monomer. |
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| Keywords: | RAFT |
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