A facile method for the fabrication of vinyl functionalized hollow silica spheres.
A facile method for the fabrication of vinyl functionalized hollow silica spheres.
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DOI：
10.1016/j.jcis.2008.11.037
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发表时间：
2009-03
影响因子：
9.9
通讯作者：
H. Pu;Xiong Zhang;Junjie Yuan;Zhenglong Yang
中科院分区：
文献类型：
--
作者：
H. Pu;Xiong Zhang;Junjie Yuan;Zhenglong Yang
本文采用一种简便的方法制备了乙烯基官能化二氧化硅中空微球。通过乙烯基三乙氧基硅烷(VTES)的水解和缩合反应，将乙烯基官能化二氧化硅壳层包覆在带正电的聚苯乙烯颗粒上，然后将聚苯乙烯核溶解在相同的介质中，得到单分散的乙烯基官能化二氧化硅空心球。去除聚苯乙烯核既不需要额外的溶解也不需要焙烧过程。采用透射电子显微镜、红外光谱、热重分析和孔隙率测试等手段对单分散乙烯基官能化空心二氧化硅微球进行了表征。
In this paper, we adopt a facile method to prepare vinyl functionalized hollow silica spheres. Vinyl functionalized silica shells were coated on positively charged polystyrene particles by hydrolysis and condensation of vinyltriethoxysilane (VTES), the polystyrene cores were dissolved subsequently in the same medium to form monodispersed vinyl functionalized hollow silica spheres. Neither additional dissolving nor a calcination process is necessary to remove the polystyrene cores. Transmission electron microscopy (TEM), FT-IR analysis, TGA and porosity measurements were used to characterize the monodispersed vinyl functionalized hollow silica spheres.