采用无皂乳液聚合法制备聚苯乙烯（PS）微球，将所制备的PS微球经磺化吸水后，利用钛酸丁酯作前驱体在乙醇中反应，使TiO2包覆在磺化苯乙烯微球表面，得到有机-无机Ps／TiO2复合微球。在所得的杂化微球表面接枝上可聚官能团，利用无皂乳液聚合将聚甲基丙烯酸甲酯聚合到微球表面，得到核-壳-壳杂化微球。用FT—IR、SEM和TGA等方法对所制得的复合微球进行表征。结果表明PS、PS／TiO2及PS／TiO2／PMMA微球表面光滑，球形度好，单分散性良好；通过改变TBOT的加入量可以控制TiO。对PS微球的包覆厚度。
A series of polystyrene microspheres was prepared via soap-free emulsion polymerization. Polystyrene microspheres was sulphonated, absorbed water and then the reaction was happened between sulfonated polysty- rene and TiO2 in ethanol with TBOT as a reaction precursor, the surface of sulphonated polystyrene micro- spheres was covered by TiO2 and organic-inorganic compound microspheres was acquired. Tangible functional group was grafted on compound microspheres surface, and core-shell -shell heterozygosity microspheres was ob- tained by grafting methyl methacrylate （MMA） on heterozygosity microspheres surface with soap-free emulsion polymerization. The organic-inorganic compound microspheres were characterized by means of Fourier trans- form infrared spectrometer, scanning electron microscope and thermal gravimetric analysis etc. The results show that PS,PS/TiO2 and PS/TiO2/PMMA microspheres surface smooth, spherical degree good and single good dispersancy;controllable shell thickness by change of the quantity of TBOT to PS/TiO2 composite micro- spheres.
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