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Hollow microspheres with covalent-bonded colloidal and polymeric shell by Pickering emulsion polymerization
被引:29
作者:
Yin, Dezhong
[1
]
Zhang, Qiuyu
[1
]
Yin, Changjie
[1
]
Zhao, Xingbo
[1
]
Zhang, Hepeng
[1
]
机构:
[1] Northwestern Polytech Univ, Sch Sci, Xian 710072, Peoples R China
基金:
中国国家自然科学基金;
关键词:
hollow microspheres;
Pickering emulsion polymerization;
phase separation;
FABRICATION;
COLLOIDOSOMES;
PARTICLES;
D O I:
10.1002/pat.1865
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Hollow microspheres with SiO2/polymer binary shell were fabricated from Pickering emulsion stabilized solely by methacryloxypropyltrimethoxysilane-modified SiO2 particles, and were characterized by optical microscopy, scanning electron microscopy, Fourier transformation infrared spectrum, thermogravimetric analysis (TGA), and energy dispersive X-ray spectroscopy. The microspheres were templated by the Pickering droplets and the inner structure was affect by the proportion of crosslinking reagent. TGA result indicated that 60.3% of polymer in the shell was connected with SiO2 by covalent bond which was formed by copolymerization of styrene and the reactive C=C group on SiO2 stabilizer. Copyright (C) 2011 John Wiley & Sons, Ltd.
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页码:273 / 277
页数:5
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