Simple preparation of hemispherical polystyrene particles

被引：37

作者：

Higuchi, Takeshi

Yabu, Hiroshi

Shimomura, Masatsugu

机构：

[1] Hokkaido Univ, Res Inst Elect Sci, Nanotechnol Res Ctr, Kita Ku, Sapporo, Hokkaido 0010021, Japan

[2] Hokkaido Univ, Grad Sch Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan

[3] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[4] JST, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2006年 / 284卷

关键词：

polymer particles; self-organization; polystyrene; hemispherical particles;

D O I：

10.1016/j.colsurfa.2005.10.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We show the simple preparation of the hemispherical polymer particles. Submicron sized hemispherical polystyrene particles were prepared by adding a poor solvent (water) into a tetrahydrofran (THF) solution of polystyrene and following evaporation of THE When the concentration of the polymer solution was higher than 0.4 g/L, spherical particles were formed. On the other hand, the hemispherical nano-particles were formed in the case of the dilute solution whose concentration was lower than 0.2 g/L. Turbidity change of the polymer solution due to THF evaporation starts from the surface of the solution. The light scattering experiment suggests that the hemispherical nano-particles were formed by precipitation at the air/solution interface. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：250 / 253

页数：4

共 8 条

[1] Design of environment-sensitive supramolecular assemblies for intracellular drug delivery: Polymeric micelles that are responsive to intracellular pH change [J].