Synthesis of submicron-sized composite particles with unique morphology by emulsifier-free seeded emulsion copolymerization

被引：5

作者：

Chu, Hong ^{[1
]}

Wang, Hongyan ^{[1
]}

Ni, Zhongbin ^{[1
]}

Liu, Xiaoya ^{[1
]}

Chen, Mingqing ^{[1
]}

机构：

[1] Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China

来源：

PARTICUOLOGY | 2008年 / 6卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Seed; Composite particle; Emulsifier-free emulsion copolymerization; Morphology;

D O I：

10.1016/j.partic.2008.06.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Polystyrene (PSt) microspheres with diameter of 375 nm to be used as the seeds for seeded emulsion polymerization were prepared via emulsion polymerization using potassium persulfate (KPS) as initiator in ethanol-water mixed solvents. Emulsifier-free seeded emulsion copolymerization of styrene (St) with acrylonitrile (AN) was carried out in the presence of poly(ethylene glycol) monomethoxymonomethacrylate (PEGm) macromonomer as reactive stabilizer and 2,2'-azobisisobutyronitrile (AIBN) as initiator to obtain submicron-sized PEGm graft poly(styrene-coacrylonitrile) (PEGm-g-PSAN) composite particles with unique morphology. Scanning electron microscopy (SEM) indicated that St and AN together contributed to forming the unusual morphology. The concentration of St and AN, total monomer concentration, initiator type and the monomer adding method remarkably affected the morphology of the composite polymer particles. (C) 2008 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：369 / 375

页数：7

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