Sparsely-distributed silica/PMMA composite particles prepared by static polymerization in aqueous silica dispersion.
Sparsely-distributed silica/PMMA composite particles prepared by static polymerization in aqueous silica dispersion.
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DOI：
10.1016/j.jcis.2010.08.061
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发表时间：
2010-12
影响因子：
9.9
通讯作者：
Shintaro Kawano;Asumi Sei;M. Kunitake
中科院分区：
文献类型：
--
作者：
Shintaro Kawano;Asumi Sei;M. Kunitake
采用甲基丙烯酸甲酯（MMA）在亚微米二氧化硅颗粒的水分散体中进行静态分散聚合，形成二氧化硅/聚甲基丙烯酸甲酯（PMMA）复合颗粒，其中二氧化硅颗粒稀疏地分布在PMMA颗粒的表面。基于 PMMA 和二氧化硅之间的弱相互作用，通过 Pickering 乳液状二氧化硅/PMMA 聚集体构建了二氧化硅改性 PMMA 颗粒。复合颗粒的形态由 PMMA 与二氧化硅表面的吸附/分配平衡决定。
Silica/poly(methyl methacrylate) (PMMA) composite particles, in which silica particles are sparsely distributed in the surface of PMMA particles, were formed by static dispersion polymerization of methyl methacrylate (MMA) in aqueous dispersions of submicron silica particles. The silica-modified PMMA particles were constructed via Pickering emulsion-like silica/PMMA aggregation based on weak interaction between PMMA and silica. The morphology of the composite particles is governed by the adsorption/partition equilibrium of PMMA with the silica surface.