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Pickering乳液模板法制备Janus粒子
引用本文:王朝阳,阳瑞,陈云华,童真.Pickering乳液模板法制备Janus粒子[J].高等学校化学学报,2010,31(5):864-866.
作者姓名:王朝阳  阳瑞  陈云华  童真
作者单位:华南理工大学材料科学研究所,广州,510640
基金项目:国家自然科学基金,中央高校基本科研业务费专项资金 
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
收稿时间:2009-11-16

Janus Particles Prepared by Pickering Emulsion Template
WANG Chao-Yang,YANG Rui,CHEN Yun-Hua,TONG Zhen.Janus Particles Prepared by Pickering Emulsion Template[J].Chemical Research In Chinese Universities,2010,31(5):864-866.
Authors:WANG Chao-Yang  YANG Rui  CHEN Yun-Hua  TONG Zhen
Institution:Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China
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.
Keywords:Atom transfer radical polymerization(ATRP)  Pickering emulsion  Janus particle
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