Temperature- and pH-sensitive membrane formed from blends of poly(vinylidene fluoride)-graft-poly(N-isopropylacrylamide) and poly(acrylic acid) microgels

被引：35
作者：
Chen, Xi
Zhao, Bowu
Han, Peng
Fu, Weigui
Chen, Li
机构：
[1] Tianjin Polytech Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China
[2] Tianjin Polytech Univ, State Key Lab Hollow Fiber Membrane Mat & Proc, Tianjin 300387, Peoples R China
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2014年 / 84卷
基金：
中国国家自然科学基金;
关键词：
Poly(vinylidene fluoride); Temperature-sensitive; pH-sensitive; Poly(acrylic acid); Poly(N-isopropylacrylamide); Antifouling property; VINYLIDENE FLUORIDE MEMBRANE; ULTRAFILTRATION MEMBRANE; MICROPOROUS MEMBRANES; POROUS MEMBRANE; POLY(N-ISOPROPYLACRYLAMIDE); POLYMERIZATION; IMMOBILIZATION; PERFORMANCE; COPOLYMERS; SOLVENT;
D O I：
10.1016/j.reactfunctpolym.2014.08.005
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Temperature- and pH-responsive membranes prepared from blends of poly(vinylidene fluoride)-graft-poly(N-isopropylacrylamide)(PVDF-g-PNIPAM) copolymer and poly(acrylic acid) (PAA) microgels in N,N-dimethylformamide (DMF) solution by phase inversion method. PM microgels help PNIPAM chains largely enrich onto membrane surface. Furthermore, adding PM microgels increases the porous size, porosity and hydrophilic property of the blend membrane. The membranes show temperature-sensitivity between 30 and 35 degrees C, and pH-sensitivity between pH 3 and 5 on permeating aqueous solutions. Meanwhile, the blend membranes keep good antifouling property even if one of the hydrophilic components becoming hydrophobic in response to temperature or pH stimuli, which is superior to single-sensitive PVDF membrane. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：10 / 20
页数：11
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