Hollow microspheres with covalent‐bonded colloidal and polymeric shell by Pickering emulsion polymerization |
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| Authors: | Dezhong Yin Qiuyu Zhang Changjie Yin Xingbo Zhao Hepeng Zhang |
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| Institution: | School of Science, Northwestern Polytechnical University, Xi'an 710072, P. R. China |
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| Abstract: | 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 © 2011 John Wiley & Sons, Ltd. |
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| Keywords: | hollow microspheres Pickering emulsion polymerization phase separation |
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