Surface nucleation-induced fluoropolymer Janus nanoparticles via emulsifier-free batch-seeded emulsion polymerization

被引：41
|
作者：
Pan, Mingwang [1 ]
Yang, Lianyun [2 ]
Guan, Bing [2 ]
Lu, Maosheng [2 ]
Zhong, Ganji [3 ]
Zhu, Lei [2 ]
机构：
[1] Hebei Univ Technol, Inst Polymer Sci & Engn, Tianjin 300130, Peoples R China
[2] Case Western Reserve Univ, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA
[3] Sichuan Univ, Coll Polymer Sci & Engn, Chengdu 610065, Peoples R China
来源：
SOFT MATTER | 2011年 / 7卷 / 23期
关键词：
NONSPHERICAL COLLOIDAL PARTICLES; ANISOTROPIC PARTICLES; INTERFACIAL PHENOMENA; LATEX-PARTICLES; MORPHOLOGY; MICROPARTICLES; NETWORKS;
D O I：
10.1039/c1sm06498c
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：
Nonspherical poly(vinylidene fluoride)/polystyrene (PVDF/PS) composite latex particles were prepared via a facile emulsifier-free batch-seeded emulsion polymerization. It was found that the styrene (St)/PVDF feed ratio was a determining factor for the formation of well-defined Janus particles. Transmission electron microscopy study revealed that the immiscibility between PVDF and St-swollen PS (PS/St) was the driving force for the dewetting and nucleation of PS/St bulges on the PVDF particle surface. When the St/PVDF feed ratio was high, easy fusion of multiple PS/St bulges into one single bulge on the PVDF particle resulted in well-defined PVDF/PS Janus particles. When the St/PVDF feed ratio was low, it was difficult for multiple bulges to fuse together to form PVDF/PS Janus particles.
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页码：11187 / 11193
页数：7
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