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Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (17): 2047-2052. Previous Articles Next Articles
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张卫红,范晓东*,田威*,范伟伟,程广文
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超支化核壳型高分子设计及双客体选择性包载和顺序释放机理
ZHANG Wei-Hong, FAN Xiao-Dong, TIAN Wei, FAN Wei-Wei, CHENG Guang-Wen
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Hollow composite microspheres can be prepared rapidly by Pickering emulsion polymerization initiated by ultraviolet light. Firstly, nano-SiO2 were endowed with amphipathy and photosensitivity by grafting with 2-hydroxy-4-(2-hydroxyethoxy)-2-methyl-propiophenone (IHT-PI 659). Secondly, stable Pickering emulsion was fabricated by using this functional nano-SiO2 particles as stabilizer. Finally, the SiO2/polymethylmethacrylate composite microspheres with hollow structure were successfully synthesized by Pickering emulsion polymerization initiated by ultraviolet light at room temperature. The products were characterized by Fourier transformation infrared spectrum (FTIR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and scanning electron microscope (SEM). A possible mechanism for the formation of the hollow composites by photo-initiation Pickering emulsion polymerization was also proposed.
Key words: UV initiation, Pickering emulsion polymerization, hollow composite microspheres
CLC Number:
0631
ZHANG Wei-Hong, FAN Xiao-Dong, TIAN Wei, FAN Wei-Wei, CHENG Guang-Wen. Synthesis of Hollow Microspheres by Pickering Emulsion Polymerization Initiated by Ultraviolet Light[J]. Acta Chimica Sinica, 2011, 69(17): 2047-2052.
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