细乳液法合成单核核壳结构氧化硅/聚苯乙烯复合微球

功能材料, 2007, 38(2): 272-275.

细乳液法合成单核核壳结构氧化硅/聚苯乙烯复合微球

强伟丽 ^1, , 王祎龙 ^2, , 贺枰 ^3, , 徐宏 ^4, , 古宏晨 ^5,

1.上海交通大学,微纳科学技术研究院,微米/纳米加工技术国家重点实验室,薄膜与微细技术教育部重点实验室,上海,200030

2.上海交通大学,微纳科学技术研究院,微米/纳米加工技术国家重点实验室,薄膜与微细技术教育部重点实验室,上海,200030

3.上海交通大学,微纳科学技术研究院,微米/纳米加工技术国家重点实验室,薄膜与微细技术教育部重点实验室,上海,200030

4.上海交通大学,微纳科学技术研究院,微米/纳米加工技术国家重点实验室,薄膜与微细技术教育部重点实验室,上海,200030

5.上海交通大学,微纳科学技术研究院,微米/纳米加工技术国家重点实验室,薄膜与微细技术教育部重点实验室,上海,200030

基金项目: 国家高技术研究发展计划(863计划)(2005A302H10)

关键词：细乳液聚合 , 单核核壳结构 , 纳米复合微球 , 氧化硅

Synthesis of silica/polystyrene monocore-shell nanocomposite particles via miniemulsion polymerization

采用细乳液聚合法,以3-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)表面改性的直径50nm的氧化硅粒子为核,在乳化剂、助乳化剂、引发剂存在的情况下制备了小粒径、单核核壳结构氧化硅/聚苯乙烯纳米复合微球.研究表明,苯乙烯的浓度、超声细乳化时间,是制备这种小粒径、单分散、单核核壳结构的氧化硅/聚苯乙烯纳米复合微球的关键因素.透射电镜(TEM)的观察显示,在优化的实验条件下,可以制得平均粒径95nm,壳厚20nm,粒径均一、球形规整度较好、单核核壳结构的氧化硅/聚苯乙烯纳米复合微球.其平均粒径远低于用其它聚合方法制备的复合微球.

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