Integrated antimicrobial and antifouling ultrafiltration membrane by surface grafting PEO and N-chloramine functional groups
Integrated antimicrobial and antifouling ultrafiltration membrane by surface grafting PEO and N-chloramine functional groups
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表面接枝PEO和N-氯胺官能团的抗菌防污一体化超滤膜
DOI：
10.1016/j.jcis.2017.04.028
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发表时间：
2017-08-15
影响因子：
9.9
通讯作者：
Li, Shenghai
中科院分区：
文献类型：
--
作者：
Hou, Shuhua;Xing, Jialin;Li, Shenghai
用一种工程热塑性塑料(羧基化角碳多酚(芳基醚酮，PEI(-COOH)制备了具有抗菌和防污染综合性能的超滤膜。通过EDC/NHS方法在PEK-COOH膜表面接枝了不同相对分子质量的PEO(相对分子质量分别为120、350、550)。然后将N-氯胺改性膜简单地暴露在稀次氯酸钠溶液中。表面接枝过程均在水中进行(即无有机溶剂)。与未改性的PEK-COOH膜相比，经表面改性的PEK-COOH膜亲水性显著提高，纯水通量增加。此外，PEO和N-氯胺改性膜不仅对蛋白质吸附和细菌黏附有抵抗力，而且对微生物的增殖也有抵抗力。研究结果表明，PEO和N-氯胺改性膜有望成为耐污染膜。(C)2017 Elsevier Inc.保留所有权利。
Ultrafiltration membranes with integrated antimicrobial and antifouling properties were fabricated using an engineering thermoplastic (carboxylated cardopoly(aryl ether ketone, PEI(-COOH). Different molecular weights of PEO (Mw: 120, 350, 550) were grafted to the PEK-COOH membrane surface via EDC/NHS methodology. N-chloramine modified membranes then were prepared by simple exposure to dilute sodium hypochlorite solution. The surface grafting processes were all performed in water (i.e. without organic solvent). With this surface modification, the hydrophilicity of membranes improved significantly and the pure water flux increased compared to the unmodified PEK-COOH membrane. Furthermore, the PEO and N-chloramine modified membranes were resistant not only to both protein adsorption and bacterial adhesion, but also to microbial proliferation. The results of this work suggest that PEO and Nchloramine modified membranes are promising as fouling-resistant membranes. (C) 2017 Elsevier Inc. All rights reserved.