Fouling resistance and cleaning efficiency of stimuli-responsive reverse osmosis (RO) membranes

被引：31
|
作者：
You, Meng [1 ]
Wang, Pan [1 ]
Xu, Mingli [1 ]
Yuan, Tao [1 ]
Meng, Jianqiang [1 ]
机构：
[1] Tianjin Polytech Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
来源：
POLYMER | 2016年 / 103卷
关键词：
RO membrane; Stimuli-responsive polymer; Antifouling; Easy-cleaning; Surface grafting; SURFACE-PROPERTIES; NANOFILTRATION MEMBRANES; ULTRAFILTRATION MEMBRANES; CONTACT ANGLES; CHARGE; POLYMERIZATION; PROTEIN; DESALINATION; PERFORMANCE; CHEMISTRY;
D O I：
10.1016/j.polymer.2016.03.065
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of stimuli-responsive reverse (RO) membranes were prepared by tethering three stimuliresponsive polymers, poly (sulfobetaine methacrylate) (PSBMA), poly (4-(2-Sulfoethyl)-1-(4-vinyl-benzyl) pyridinium betain) (PSVBP) and poly (N-isopropylacrylamide) (PNIPAM) onto the surface of a commercial thin-film (TFC) RO membrane via surface-initiated graft polymerization. The membrane surface was characterized by ATR-FTIR, XPS, zeta potential, water contact angle (WCA), FESEM and AFM. Membrane characterization indicates successful grafting of these polymers, with more negatively-charged, smoother and more hydrophilic surfaces as a result. Long-term fouling-rinsing cycled experiments were conducted to evaluate fouling resistance and cleaning efficiency. With CaCO3 as the foulant, the modified membranes showed better fouling resistance in the whole testing as long as 320 h; with BSA as the foulant, they only showed better antifouling performance in short term. However, the modified membranes showed much higher cleaning efficiency in both cases, with the PA-g-PSVBP membrane as the best one. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：457 / 467
页数：11
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