Photoinitiated RAFT Dispersion Polymerization: A Straightforward Approach toward Highly Monodisperse Functional Microspheres
Photoinitiated RAFT Dispersion Polymerization: A Straightforward Approach toward Highly Monodisperse Functional Microspheres
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DOI：
10.1021/ma301799r
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发表时间：
2012-10
期刊：
影响因子：
5.5
通讯作者：
Jianbo Tan;Xin Rao;Xionghao Wu;H. Deng;Jianwen Yang;Z. Zeng
中科院分区：
文献类型：
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作者：
Jianbo Tan;Xin Rao;Xionghao Wu;H. Deng;Jianwen Yang;Z. Zeng
提出了一种简单的分散聚合法制备单分散功能高分子微球。该方法通过将光引发剂和RAFT链转移剂引入到反应中来克服源自高度敏感的成核阶段的问题。研究了该过程中粒子的形成和生长过程，发现其与传统的分散聚合过程有很大的不同。采用该方法一步合成了多种粒径均匀的PMMA基功能微球。即使在交联剂或官能共聚单体的浓度高达10重量%时，微球的尺寸也保持均匀。
A straightforward dispersion polymerization procedure for the synthesis of monodisperse functional polymeric microspheres is proposed in this article. This method overcomes the problems deriving from the highly sensitive nucleation stage by introducing both photoinitiation and a RAFT chain transfer agent to the reaction. The process of the formation and growth of particles in the procedure was investigated and found to be quite different from that in a traditional dispersion polymerization. Various kinds of PMMA-based functional microspheres with high size uniformity were synthesized in a single step by this strategy. The microspheres remained uniform in size, even at concentrations of cross-linker or functional comonomer up to 10 wt %.