膜科学与技术

内表面负载银粒子中空纤维PSF超滤膜制备与表征

作者：徐杨¹，任翘楚¹，杨虎¹，许振良¹，江邦和²

单位： 1化学工程联合国家重点实验室，华东理工大学化学工程研究所膜科学与工程研发中心，上海200237； 2华东理工大学华昌聚合物有限公司，上海200237

关键词：中空纤维膜；银粒子；抗污染；聚砜

出版年,卷(期):页码： 2016,36(1):7-11

摘要：

本文以AgNO3为原料，N,N-二甲基甲酰胺（DMF）为还原剂，聚乙烯吡咯烷酮（PVP）为分散剂，还原制备了银粒子；以银粒子溶液为芯液，采用非溶剂致相分离（NIPS）法制备了中空纤维聚砜（PSF）超滤膜；采用扫描电镜和接触角测定仪等对膜性能进行了表征。结果表明，银粒子的添加显著改善了中空纤维PSF超滤膜通量与亲水性能。以腐殖酸为污染物，讨论了PSF-Ag膜的抗有机污染性能，与纯PSF膜相比，PSF-Ag膜通量衰减较慢，可有效阻止污染物的吸附与沉积，具有良好的抗污染性能。

Using silver nitrate (AgNO3) as a raw material, N,N-dimethyl formamide (DMF) as a reducing agent and poly (vinyl pyrrolidone) (PVP) as a dispersing agent, Ag particles were fabricated by reducing. Polysulfone (PSF) hollow fiber ultrafiltration membranes were prepared via non-solvent induced phase separation (NIPS) method using the solution containing Ag particles as a bore fluid. The membrane was characterized by Scanning Electron Microscopy (SEM) and contact angle. The hydrophilicity of the membrane inner surface was improved by the integration of Ag particles, leading to an increase in pure water flux from 378 to 452 L/m2h and a reduction in membrane inner surface contact angle from 86 to 78°. The organic antifouling performance was evaluated by using the humic acid solution. The experimental results confirm that the existence of Ag particles in PSF ultrafiltration membrane could mitigate the adsorption and deposition of organics to the organic fouling resistance.

徐杨（1990-），男，江苏启东人，硕士研究生，主要从事膜分离技术的研究工作。通讯联系人：Email：chemxuzl@ecust.edu.cn

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