Robust Stimuli-Responsive Membranes Prepared from a Blend of Polysulfone and a Graft Copolymer Bearing Binary Side Chains with Thermo-and pH-Responsive Switching Behavior

被引：15
|
作者：
Miao, Lei [1 ,2 ,3 ,4 ]
Tu, Yuanyuan [2 ,3 ,4 ]
Yang, Yang [2 ,3 ,4 ]
Lin, Shudong [2 ,3 ,4 ]
Hu, Jiwen [2 ,3 ,4 ]
Zhang, Min [1 ]
Li, Yue [1 ]
Li, Fei [2 ,3 ,4 ]
Mo, Yangmiao [2 ,3 ,4 ]
机构：
[1] Foshan Univ, Jiangwan 1st Rd 18, Foshan 528000, Peoples R China
[2] Chinese Acad Sci, Guangzhou Inst Chem, Xingke Rd 368, Guangzhou 510675, Guangdong, Peoples R China
[3] Chinese Acad Sci, Key Lab Cellulose & Lignocellulos Chem, Guangzhou 510650, Guangdong, Peoples R China
[4] Guangdong Prov Key Lab Organ Polymer Mat Elect, Guangzhou 510650, Guangdong, Peoples R China
来源：
CHEMISTRY-A EUROPEAN JOURNAL | 2017年 / 23卷 / 32期
基金：
中国国家自然科学基金;
关键词：
copolymerization; filtration; membranes; polymers; stimuli-responsive materials; ULTRAFILTRATION MEMBRANES; THERMORESPONSIVE MEMBRANE; MOLECULAR-WEIGHT; POROUS MEMBRANE; POLYETHERSULFONE; SURFACE; PNIPAM; METHACRYLATE); PERMEABILITY; SELECTIVITY;
D O I：
10.1002/chem.201605263
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A stimuli-responsive membrane exhibiting independent pH-and temperature-responsive behavior was fabricated from a blend of commercial polysulfone with a functional amphiphilic binary graft copolymer, namely, polysulfone- graft-(poly(isopropylacrylamide-co-acrylic acid)random- poly(methyl acrylate)), denoted PSf-g-(P(NIPAAm-coAA)- r-PMMA). Two graft copolymers with different lengths of P(NIPAAm-co-AA) side chains were designed and enriched on the membrane surface to serve as thermo-and pH-responsive on/off switches. The differences between the dualresponsive behaviors of the two kinds of polymer-blend membranes were studied by water-flux and contact-angle measurements. The PMMA side chains served to securely anchor the graft copolymers to the membrane substrate, and the blended membrane prepared from binary graft copolymer was more stable and exhibited more robust stimuliresponsive behavior than that prepared from mono-graft copolymer PSf-g-P(NIPAAm-co-AA).
引用
收藏
页码：7737 / 7747
页数：11
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