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

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Current Applied Physics Pub Date : 2008-10-01 DOI:10.1016/j.cap.2007.04.031

Jung Min Lee, Kangseok Lee, Kyungjin Min, Soonja Choe

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引用次数: 9

Abstract

The dispersion polymerization of styrene has been carried out using polystyrene-block-poly(4-vinylpyridine) copolymer [P(S-b-4VP)], prepared by a reversible addition-fragmentation chain transfer (RAFT) method, as a steric stabilizer in alcohol media. These block copolymer contains a long poly(4-vinylpyridine) block and a short polystyrene block. The stable spherical particles were obtained when the block copolymer concentrations increased from 2 to 20 wt.% relative to the monomer and the average particle sizes decreased from 340 to 200 nm with increasing concentration of the block copolymer. Alcoholic solvents, from methanol to n-hexanol, are responsible for the particle size. These results indicate that the poly(S-b-4VP) block copolymer is effective for providing polystyrene nano-sized particles with a low content of it working as a good stabilizer in any kind of alcoholic medium.

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研究了RAFT法制备的聚苯乙烯-嵌段聚(4-乙烯基吡啶)在苯乙烯分散聚合中的作用

采用可逆加成-破碎链转移(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)]作为空间稳定剂，在醇介质中进行了苯乙烯的分散聚合。这些嵌段共聚物包含一个长聚(4-乙烯基吡啶)嵌段和一个短聚苯乙烯嵌段。当嵌段共聚物相对于单体的质量分数从2 wt.%增加到20 wt.%时，得到了稳定的球形颗粒，随着嵌段共聚物浓度的增加，平均粒径从340 nm减小到200 nm。酒精溶剂，从甲醇到正己醇，是造成颗粒大小的原因。这些结果表明，聚(S-b-4VP)嵌段共聚物可以有效地提供低含量的聚苯乙烯纳米级颗粒，在任何酒精介质中都可以作为良好的稳定剂。

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.