Emulsifier-Free Emulsion Polymerization of Acrylonitrile in the Presence of Poly(methyl methacrylate) Seed Particles: Influence of the Addition Mode on the Surface Morphology

被引：12

作者：

Yang Guangzhi ^{[1
,2
]}

Liu Yang ^{[1
,2
]}

Jia Runping ^{[1
]}

Xu Risheng ^{[1
,2
]}

Wang Xia ^{[1
]}

Ling Licheng ^{[2
]}

Yang Junhe ^{[1
]}

机构：

[1] Shanghai Inst Technol, Dept Mat Sci & Engn, Shanghai 200235, Peoples R China

[2] E China Univ Sci & Technol, State Key Lab Chem Engn, Unilab, Shanghai 200237, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 112卷 / 01期

基金：

中国国家自然科学基金;

关键词：

composites; core-shell polymers; emulsion polymerization; morphology; LATEX-PARTICLES; CARBON NANOCAPSULES; FABRICATION; STYRENE;

D O I：

10.1002/app.29429

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Acrylonitrile (AN) was polymerized in the presence of poly(methyl methacrylate) (PMMA) seed latex by both the batch and dropwise addition modes. The two addition modes both led to PMMA/polyacrylonitrile (PAN) composite particles with a core/shell structure with PMMA as the core and PAN as the shell. The shell thickness could be adjusted by a change in the amount of the second-stage AN monomer relative to the PMMA seed polymer. However, the surface morphologies of the composite polymers were quite different, which showed a rambutan-like batch mode and an urchinlike dropwise mode. The reason was considered as the different precipitation mechanisms of PAN small-particle precipitation for the batch mode and linear PAN segment growth for the dropwise mode. 0 2008 Wiley Periodicals, Inc. J Appl Polym Sci 112: 410-415, 2009

引用

页码：410 / 415

页数：6

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