高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (9): 1774.

• 研究简报 • 上一篇    下一篇

单分散聚丙烯酸丁酯-二氧化硅核壳粒子的制备

杨忠强1, 李志英1, 李冬妹2, 张明1, 刘凤岐1   

  1. 1. 吉林大学化学学院, 长春130023;
    2. 吉林大学超硬材料国家重点实验室, 长春130012
  • 收稿日期:2003-07-02 出版日期:2004-09-24 发布日期:2004-09-24
  • 基金资助:

    国家自然科学基金(批准号:20274014)资助

Synthesis of Monodispersed Poly(butyl acrylate)-silica Core-shell Particles

YANG Zhong-Qiang1, LI Zhi-Ying1, LI Dong-Mei2, ZHANG Ming1, LIU Feng-Qi1   

  1. 1. College of Chemistry, Jilin University, Changchun 130023, China;
    2. State Key Laboratory of Super Hard Materials, Jilin University, Changchun 130012, China
  • Received:2003-07-02 Online:2004-09-24 Published:2004-09-24

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被引次数

20

关键词: 聚丙烯酸丁酯-二氧化硅核-壳粒子, 单分散体系, 乳液聚合

Abstract: The core-shell particles consisting of poly(butyl acrylate)(PBA) core and silica shell were synthesized. The 3-methacryloxy propyl trimethoxysilane (MPS) was used as functional comonomer to modify the PBA latex particle surface with silanol(SiOH) groups via semicontinuous emulsion polymerization. The resulted emulsion was transferred into water/ethanol mixture without loss of stability and functionalized PBA latex was used as seeds for further silica shell growth. The coating process was achieved by Stber method, base-catalyzed hydrolysis and condensation of tetraethoxysilane(TEOS). The functionalized latex and core/shell particles were characterized by using differential thermal analysis(DTA), transmission electron microscope and light scattering. It has been confirmed that the PBA latex particles have been entirely enveloped with silica shell and the core/shell particles are monodisperse. The thickness of silica shell can be estimated by the size difference of functionalized PBA-SiO2 core-shell particles.

Key words: Poly(butyl acrylate)-silica core/shell particles, Monodisperse system, Emulsion polymerization

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