Preparation of Hemispherical Polymer Particles by Cleavage of a Janus Poly(methyl Methacrylate)/Polystyrene Composite Particle

被引：23

作者：

Yamashita, Nobuko ^{[1
]}

Konishi, Natsumi ^{[1
]}

Tanaka, Takuya ^{[1
]}

Okubo, Masayoshi ^{[1
,2
]}

机构：

[1] Kobe Univ, Grad Sch Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

[2] Smart Spheres Workshop Co Ltd, Kobe, Hyogo 6580032, Japan

来源：

LANGMUIR | 2012年 / 28卷 / 35期

基金：

日本学术振兴会;

关键词：

EMULSION POLYMERIZATION; LATEX-PARTICLES; MORPHOLOGY DEVELOPMENT; MICROSPHERES;

D O I：

10.1021/la302442t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Micrometer-sized, hemispherical particles were successfully prepared as a result of the cleavage of Janus PMMA/PS composite particles by dispersion into acetone/water (9/1-10/0 v/v) media or a THF/water (8/2 v/v) medium. The spherical composite particles having a Janus structure were prepared by the slow evaporation of toluene from homogeneous PMMA/PS/toluene droplets dispersed in an aqueous medium in advance. It was clarified that the difference in affinity between PMMA and PS phases with respect to the media caused the cleavage of the composite particles. This method is expected to be a novel approach to the preparation of nonspherical polymer particles.

引用

页码：12886 / 12892

页数：7

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