文献类型：期刊文献

英文题名：Synthesis of thermo- and pH-sensitive polyelectrolyte brushes by combining thermo-controlled emulsion polymerization and photo-emulsion polymerization

作者：Wang, Xiang[1];Guo, Xu-hong[1];Zhu, Yan[1];Li, Li[1];Wu, Shuang[1];Zhang, Rui[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：29

期号：4

起止页码：490

外文期刊名：CHINESE JOURNAL OF POLYMER SCIENCE

收录：;EI(收录号：20212810631589);WOS:【SCI-EXPANDED(收录号:WOS:000291057500013)】；

基金：This work was financially supported by the National Natural Foundation of China (Nos. 20644003, 20774028), Shanghai Pujiang Talent Project (08PJ14036) and the Fundamental Research Funds for the central Universities.

语种：英文

外文关键词：Spherical polyelectrolyte brush; Thermo-sensitive; pH-responsive

摘要：Bifunctional spherical polyelectrolyte brushes (SPBs) with tunable thermo- and pH-sensitivity are synthesized by combining thermo-controlled emulsion polymerization and photo-emulsion polymerization. They consist of a spherical polystyrene core and a shell of mixed brushes of poly(N-isopropylacrylamide) (PNIPAM) and poly(acrylic acid) (PAA) whose composition can be easily modulated by the dose of monomers. The kinetics of SPB synthesis as well as their size change with temperature and pH is determined by dynamic light scattering (DLS). The scanning electron microscopy (SEM) images show that the bifunctional SPBs have a defined spherical morphology with a narrow size distribution.