The effect of polystyrene-block-poly(4-vinylpyridine) prepared by a RAFT method in the dispersion polymerization of MMA

IF 4.1 2区化学 Q2 POLYMER SCIENCE Polymer Pub Date : 2006-05-17 DOI:10.1016/j.polymer.2006.03.033

Jung Min Lee, Byung H. Lee, Soonja Choe

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引用次数: 30

Abstract

The dispersion polymerization of methyl methacrylate (MMA) has been carried out using polystyrene-block-poly(4-vinylpyridine) copolymer [P(S-b-4VP)], which was prepared by a reversible addition–fragmentation chain transfer (RAFT) method, as a steric stabilizer in an alcohol media. The stable polymer particles were obtained when the block copolymer concentrations increased from 1 to 10 wt% relative to the monomer and the average particle sizes decreased from 5.3 to 3.4 μm with the increasing concentration of the block copolymer. In particular, the incorporation of 2 wt% polystyrene-block-poly(4-vinylpyridine) produced 4.3 μm of monodisperse PMMA particles with 2.14% of C_v. Thus, the P(S-b-4VP) block copolymer prepared by the RAFT method is working not only as a steric stabilizer, but also in providing monodisperse micron-sized PMMA particles.

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RAFT法制备聚苯乙烯-嵌段聚(4-乙烯基吡啶)在MMA分散聚合中的作用

采用可逆加成-断裂链转移(RAFT)法制备了聚苯乙烯-嵌段聚(4-乙烯基吡啶)共聚物[P(S-b-4VP)]，以其作为空间稳定剂，在醇介质中进行了甲基丙烯酸甲酯(MMA)的分散聚合。当嵌段共聚物相对于单体的质量分数从1 wt%增加到10 wt%时，得到了稳定的聚合物颗粒，随着嵌段共聚物浓度的增加，平均粒径从5.3 μm减小到3.4 μm。特别是，2 wt%的聚苯乙烯-嵌段聚(4-乙烯基吡啶)的掺入产生了4.3 μm的单分散PMMA颗粒，Cv为2.14%。由此可见，RAFT法制备的P(S-b-4VP)嵌段共聚物不仅可以作为空间稳定剂，而且可以提供单分散的微米级PMMA颗粒。

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.