高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (5): 864.

• 研究快报 • 上一篇    下一篇

Pickering乳液模板法制备Janus粒子

王朝阳, 阳瑞, 陈云华, 童真   

  1. 华南理工大学材料科学研究所, 广州 510640
  • 收稿日期:2009-11-16 出版日期:2010-05-10 发布日期:2010-05-10
  • 通讯作者: 王朝阳, 男, 博士, 教授, 主要从事无机有机纳米复合与组装研究. E-mail: zhywang@scut.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20874030, 50973034)和中央高校基本科研业务费专项资金(批准号: 2009ZZ0036)资助.

Janus Particles Prepared by Pickering Emulsion Template

WANG Chao-Yang*, YANG Rui, CHEN Yun-Hua, TONG Zhen   

  1. Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China
  • Received:2009-11-16 Online:2010-05-10 Published:2010-05-10
  • Contact: WANG Chao-Yang. E-mail: zhywang@scut.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20874030, 50973034)和中央高校基本科研业务费专项资金(批准号: 2009ZZ0036)资助.

摘要:

本文以SiO2粒子稳定的水包油(O/W)型Pickering乳液作为模板, 在乳液连续相进行SI-ATRP, 将聚合物刷接枝到SiO2粒子外半表面, 破乳得到半修饰的Janus粒子.

关键词: 原子转移自由基聚合; Pickering乳液; Janus粒子

Abstract:

“Semi-decoration” of silica particles(so-called Janus particles) with polydimethylamino ethylmethacrylate(PDMAEMA) grafts was carried out using surface-initiated atom transfer radical polymerization(SI-ATRP) based on Pickering emulsion template. ATRP initiator-immobilized silica particles assembled at the interfaces of paraffin oil-in-water emulsions and an ultimately stable Pickering emulsion was formed. SI-ATRP of water-soluble monomer DMAEMA was conducted in the water phase of the Pickering emulsion from the outer side of silica nanoparticles. Janus particles were obtained. Ag nanoparticles absorbed onto the PDMAEMA region of silica particles could be observed by transmission electron microscopy(TEM) image which indicated that Janus particles were successfully prepared. The semi-decoration by SI-ATRP based on Pickering emulsion technique offers a new route to designing Janus particles.

Key words: Atom transfer radical polymerization(ATRP); Pickering emulsion; Janus particle

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