HNTs-P4VP-Cu/PES杂化超滤膜的制备及性能研究
首发时间:2014-04-29
摘要:通过反向原子转移自由基聚合(RATRP)的方法在埃洛石纳米管(HNTs)表面接枝聚4-乙烯基吡啶(P4VP),然后将Cu2+通过络合作用固定在HNTs表面并用化学方法还原。将制备的HNTs-P4VP-Cu与聚醚砜(PES)共混,用相转化法制备聚醚砜杂化超滤膜。实验研究了HNTs-P4VP-Cu的含量对膜形态、亲水性、分离性能、抗菌性以及抗蛋白质污染性能的影响。结果表明,HNTs-P4VP-Cu的加入没有对超滤膜的孔结构产生较大影响,并且使制备的杂化膜具备了较好的亲水性,较高的纯水通量以及优良的抗菌抗污染性能。
关键词: 超滤 埃洛石纳米管(HNTs);聚醚砜(PES) 反向原子转移自由基聚合(RATRP) 抗菌性
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Preparation and characterization of HNTs-P4VP-Cu/PES hybrid ultrafiltration membrane
Abstract:Poly (4-vinyl pyridine) (P4VP) was grafted onto the surface of Halloysite nanotubes (HNTs) through reverse atom transfer radical polymerization (RATRP). Cu2+ was subsequently immobilized to HNTs via complexation reaction with P4VP and then was reduced through chemical method. Polyethersulfone (PES) based ultrafiltration membranes were fabricated via phase inversion by adding HNTs-P4VP-Cu into PES solutions. The effect of HNTs-P4VP-Cu content on the membrane performance including morphology, hydrophilicity, permeation, antibacterial and antifouling properties were investigated. The results suggested that the HNTs-P4VP-Cu/PES hybrid membranes were well prepared without destruction of the pore structure but improved hydrophilicity, enhanced water flux, and exhibited excellent antifouling and antibacterial properties.
Keywords: ultrafiltration Halloysite nanotubes (HNTs) Polyethersulfone (PES) RATRP antibacterial
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