| RAFT聚合技术在无皂乳液聚合中的应用进展 |
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| 引用本文： | 陈艳军,罗文,孙冲. RAFT聚合技术在无皂乳液聚合中的应用进展[J]. 材料导报, 2011, 25(9): 73-76,90 |
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| 作者姓名： | 陈艳军 罗文 孙冲 |
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| 作者单位： | 武汉理工大学材料科学与工程学院; |
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| 基金项目： | 国家青年科学基金(50803048); 中央高校基本科研业务费专项资金资助(2010-Ia-009) |
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| 摘 要： | 在无皂乳液聚合体系中,通过使用两亲性RAFT试剂可以解决传统RAFT乳液聚合乳液稳定性差、分子量不可控和分子量分布宽等问题。从聚合特点、成核机理以及常用的两亲性RAFT试剂等方面总结了RAFT无皂乳液聚合技术的研究现状。两亲性RAFT试剂作用下的无皂乳液聚合符合RAFT活性聚合的一般特征。两亲性RAFT试剂浓度在其CMC值以上时主要通过胶束成核机理成核,在其CMC值以下则按均相成核机理成核的几率增大。常用的两亲性RAFT试剂主要是双硫酯或三硫酯。目前该方法已经成功应用于均聚物和嵌段共聚物的制备,今后可用于制备梯度共聚物等更多精细结构的聚合物。
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| 关 键 词： | 无皂乳液聚合 RAFT聚合技术 两亲性RAFT试剂 |
Application Progress of RAFT Polymerization Technology in Surfactant-free Emulsion Polymerization |
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| CHEN Yanjun,LUO Wen,SUN Chong. Application Progress of RAFT Polymerization Technology in Surfactant-free Emulsion Polymerization[J]. Materials Review, 2011, 25(9): 73-76,90 |
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| Authors: | CHEN Yanjun LUO Wen SUN Chong |
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| Affiliation: | CHEN Yanjun,LUO Wen,SUN Chong(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070) |
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| Abstract: | Reversible addition-fragmentation chain transfer(RAFT) polymerization in conventional emulsion systems have reported some problems,such as poor colloidal stability,poor molecular weight control,or high polydispersity.These problems can be avoided by the application of amphiphilic RAFT agents via surfactant-free emulsion system.This paper mainly summarizes the polymerization characteristics,nucleation mechanism,and the application progress of amphiphilic RAFT agents in the RAFT surfactant-free emulsion polym... |
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| Keywords: | surfactant-free emulsion polymerization RAFT polymerization technology amphiphilic RAFT agents |
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