Preparation and characterization of pH-sensitive polyethersulfone hollow fiber membranes modified by poly(methyl methylacrylate-co-4-vinyl pyridine) copolymer

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• 作者：Rui Wang ; Tao Xiang ; Wenwen Yue ; Huijuan Li ; Su Liang ; Shudong Sun ; Changsheng Zhao
• 关键词：Polyethersulfone ; Hollow fiber membrane ; Poly(methyl methylacrylate-co-4-vinyl pyridine) ; pH-sensitivity ; pH-reversibility ; Cu(II) ion adsorption
• 刊名：Journal of Membrane Science
• 出版年：2012
• 出版时间：15 December, 2012
• 年：2012
• 卷：423-424
• 期：Complete
• 页码：275-283
• 全文大小：1024 K

文摘

In this study, a novel polyethersulfone (PES) hollow fiber membrane with pH-sensitivity was prepared using a copolymer of poly(methyl methylacrylate-co-4-vinyl pyridine) (P(MMA-4VPy)) as an additive. The copolymer was synthesized via free radical solution polymerization, and characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and gel permeation chromatography (GPC). The PES/P(MMA-4VPy) membranes showed excellent pH-sensitivity and pH-reversibility and exhibited good Cu(II) ion adsorption property. Furthermore, the effect of Cu(II) ion adsorption on the membrane pH-sensitivity was investigated.