文献类型：期刊文献

英文题名：Synthesis of Spherical Polyelectrolyte Brushes by Photoemulsion Polymerization with Different Photoinitiators

作者：Wang, Xiang[1];Wu, Shuang[1];Li, Li[1];Zhang, Rui[1];Zhu, Yan[1];Ballauff, Matthias[2];Lu, Yan[2];Guo, Xuhong[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Helmholtz Zentrum Berlin Mat & Energie GmbH, Soft Matter & Funct Mat, D-14109 Berlin, Germany

年份：2011

卷号：50

期号：6

起止页码：3564

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20111113758179);WOS:【SCI-EXPANDED(收录号:WOS:000288061600053)】；

基金：We gratefully acknowledge the National Natural Science Foundation of China (Grant Nos. 20644003, 20774028), Shanghai Pujiang Talent Project (Grant No. 08PJ14036), 111 Project Grant B08021, the Key Basic Research Project of Shanghai Science and Technology Commission (Grant No. 10JC1403800), and the Fundamental Research Funds for the Central Universities for support of this work.

语种：英文

外文关键词：Ionic strength - Monomers - Spheres - Grafting (chemical) - Atom transfer radical polymerization - Biosynthesis - Disease control - Wastewater treatment - Polyelectrolytes

摘要：Nanosized spherical polyelectrolyte brushes (SPBs) with tunable size and grafting density were synthesized successfully by photoemulsion polymerization using three photoinitiators. Due to their difference in structure, UV absorption, and mechanism of photoinitiation, the kinetics of photoemulsion polymerization using these respective photoinitiators are different. The grafting densities of poly(acrylic acid) (PAA) brushes varied from 0.012 to 0.081 nm(-2) by using different photoinitiators, as determined by cutting off the PAA chains from the core particles. All of the spherical PAA brushes prepared by these three photoinitiators are pH and ionic strength sensitive as demonstrated by DLS measurements. Well-defined spherical morphology with narrow size distribution for all of the brushes prepared has been observed by FESEM. This work opens a new way to control the synthesis of SPBs with tunable structure for potential applications in catalysis, wastewater treatment, disease diagnosis, and protein immobilization.