Zhengzhou University, Zhengzhou, China.
Water Sci Technol. 2012;66(4):799-803. doi: 10.2166/wst.2012.238.
In this study, a three-bore polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with antibacterial properties was prepared by phase inversion, using PES as the membrane material, N,N-dimethylacetamide (DMAC) as solvent, polyvinylpyrrolidone (PVP) and CuCl(2) as additives. The effect of CuCl(2) content on the water flux and rejection was studied and the antibacterial properties of PES hollow fiber UF membrane were also investigated. The water flux results indicated that the hydrophilic properties of PES UF membranes were improved after adding CuCl(2). The rejection of PVA-50000 was expected to drop slightly but remain high above 96%. The membranes showed good antibacterial activity against Escherichia coli (E. coli) after adding CuCl(2) and the antibacterial rate of PES/CuCl(2) UF membranes was close to 100% after running for 48 h. PES hollow fiber UF membranes with antibacterial properties were prepared through the formation of the water-soluble PVP/Cu(2+) complex with spatial network structure, which have good antibacterial and hydrophilic properties. Therefore, this study could provide an effective method for membrane antifouling.
在这项研究中，通过相转化法制备了一种具有抗菌性能的三孔聚醚砜（PES）中空纤维超滤（UF）膜，以 PES 为膜材料，N,N-二甲基乙酰胺（DMAC）为溶剂，聚乙烯吡咯烷酮（PVP）和 CuCl2 为添加剂。研究了 CuCl2 含量对水通量和截留率的影响，并考察了 PES 中空纤维 UF 膜的抗菌性能。水通量结果表明，加入 CuCl2 后 PES UF 膜的亲水性得到改善。PVA-50000 的截留率预计会略有下降，但仍保持在 96%以上。加入 CuCl2 后，膜对大肠杆菌（E. coli）表现出良好的抗菌活性，PES/CuCl2 UF 膜的抗菌率在运行 48 小时后接近 100%。通过形成具有空间网络结构的水溶性 PVP/Cu（2+）配合物，制备了具有抗菌性能的 PES 中空纤维 UF 膜，具有良好的抗菌和亲水性能。因此，本研究可为膜抗污染提供一种有效方法。
