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
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
收藏
页码:410 / 415
页数:6
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