不同种类致孔剂对水处理聚砜超滤膜污染阻力的影响与分析

摘要

通过非溶剂诱导相转化的方法,分别采用聚乙烯吡咯烷酮(PVP-K10)、聚乙二醇(PEG-400)和十六烷基三甲基溴化铵(CTAB)作为致孔剂制备了三种不同的聚砜超滤膜,并借助系列阻力模型对其过滤蛋白质水溶液过程中的抗污染性能进行了定量分析.实验结果表明,因三种致孔剂能促使聚砜超滤膜孔隙结构进一步发展,三种具有不同致孔剂聚砜超滤膜的透水通量都得到了提高；蛋白质溶液过滤过程中,三种聚砜超滤膜的污染阻力都进一步减小,抗污染能力增强.%Through nonsolvent induced phase inversion (NIPS) method,three different types of ultrafiltration membranes with three different kinds of porogens were prepared and these pore-forming agents (porogens) were PEG-400,PVP-K10 and cetyl trimethyl ammonium bromide (CTAB),respectively.Their antifouling performances during the ultrafiltration of protein solution were analyzed quantitatively according to the resistance-in-series model.Experimental results showed that the three different kinds of porogens could facilitate the further development of pore structures of polysulfone ultrafiltration membranes and water fluxes of polysulfone membranes with the three kinds of porogens were all improved.During the process of protein solution,the fouling resistances of these three kinds of polysulfone membranes were all reduced and the antifouling performance were all enhanced.