高等学校化学学报

高等学校化学学报

• 研究快报 • 上一篇    下一篇

表面阳离子化纳米SiO2与端官能化聚苯乙烯的静电组装行为

史博1, 章永化1, 石耀刚2, 王建华2   

    1. 华南理工大学高分子系,广州 510640;
    2. 中国工程物理研究院, 绵阳 621900
  • 收稿日期:2007-12-18 修回日期:1900-01-01 出版日期:2008-04-10 发布日期:2008-04-10
  • 通讯作者: 章永化

Electrostatic-assembly Behavior Between Cationically Modified Silica and End-functionalized Polystyrene

SHI Bo1, ZHANG Yong-Hua1*, SHI Yao-Gang2, WANG Jian-Hua2   

    1. Department of Polymer Science, South China University of Technology, Guangzhou 510640, China;
    2. China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2007-12-18 Revised:1900-01-01 Online:2008-04-10 Published:2008-04-10
  • Contact: ZHANG Yong-Hua

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摘要： 采用静电组装方法在表面阳离子化的二氧化硅(SiO2-CBAFS)表面构筑高分子刷, 获得具有较高组装密度的高分子刷, 通过研究聚合物的分子量、溶液浓度及外界环境对组装体系表面水接触角的影响揭示组装规律及条件.

关键词: 阳离子化, 纳米二氧化硅, 端官能化, 聚苯乙烯, 静电组装

Abstract: Polystyrene brushes were constructed on cationically modified silica nanoparticles(SiO2-CBAFS) by electrostatic-assembly. TGA, TEM, AFM and contact angle were used to characterize the mass loss, microscopic images, topology, surface property of the products, respectively. The results show that PS-NH-SO3Na can be successfully attached to the surface of SiO2-CBAFS nanoparticles by electrostatic-assembly with high grafting density, which is much higher than that from the reports; the aggregation of silica can be prevented efficiently by being assembled a monolayer of PS-NH-SO3Na; the water contact angles of the Si/SiO2-CBAFS/PS-NH-SO3Na decrease with the increase of molecular weight and the mass concentration of PS-NH-SO3Na under different environments.

Key words: Cationical modification, Silica nanoparticles, End-functionalization, Polystyrene, Electrostatic-assembly

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