Synthesis of Poly(styrene-co-4-vinylpyridine) Microspheres via Dispersion Polymerization: Effect of the Concentration of 4-Vinylpyridine

被引：1

作者：

Han, Hyekyung ^{[1
]}

Hong, Chang Kook ^{[2
]}

Hong, Jinho ^{[1
]}

Park, Dong Wha ^{[1
]}

Shim, Sang Eun ^{[1
]}

机构：

[1] Inha Univ, Dept Chem Engn, Inchon 402751, South Korea

[2] Chonnam Natl Univ, Sch Appl Chem Engn, Kwangju 500757, South Korea

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 111卷 / 06期

关键词：

colloids; copolymerization; dispersions; particle size distribution; polystyrene; MONODISPERSE POLYSTYRENE MICROSPHERES; RADICAL POLYMERIZATION; PARTICLE-SIZE; METHYL-METHACRYLATE; MOLECULAR-WEIGHT; POLAR-SOLVENTS; STYRENE; STABILIZATION; MACROMONOMER; COPOLYMER;

D O I：

10.1002/app.29298

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Amphiphilic copolymer microspheres of poly(styrene-co-4-vinylpyridine) were prepared by dispersion polymerization in an alcohol/water medium. The synthesis of poly (styrene-co-4-vinylpyridine) microparticles was successfully carried out, and the latexes had a spherical morphology with good monodispersity. The degree of conversion in the early stage of polymerization decreased with increasing 4-vinylpyridine (4VP) monomer content, but the final conversions were similar (>95%,). The copolymerization rate decreased with increasing 4VP content, and a broad particle size distribution was observed with 20 wt % 4VP because of the prolonged nucleation time. With the 4VP concentration increasing, the molecular weight of the copolymer microspheres decreased, and the glass-transition temperature of the copolymers increased; this indicated that all the copolymers were random and homogeneous. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 111: 2900-2907,2009

引用

页码：2900 / 2907

页数：8

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