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在种子生长法制备不同粒径的单分散二氧化硅颗粒的基础上,采用KH-570(3-甲基丙烯酰氧丙基三甲氧基硅烷)在乙醇溶液中作为氧化硅颗粒的表面处理剂进行表面接枝改性。再将改性SiO2与苯乙烯单体进行分散聚合反应,在聚合时间不改变的前提下通过改变参与反应的SiO2颗粒粒径、浓度以及SiO2的加入时间可以得到SiO2与PS复合的3种不同构型。
Based on the preparation of monodisperse silica particles with different particle sizes by seed growth method, KH-570 (3-methacryloxypropyltrimethoxysilane) was used as the surface treatment agent of silica particles in ethanol solution Surface graft modification. Then the modified SiO2 and styrene monomer dispersion polymerization reaction, the polymerization time does not change under the premise of participating in the reaction by changing the particle size of SiO2 particles, and SiO2 addition time can be SiO2 and PS composite of three different structures type.