中文摘要：

高效 polyvinylidene 氟化物( PVDF )公寓表 ultrafiltration ( UF )膜被一个沉浸 降水阶段倒置方法作为一个毛孔前者并且作为膜和聚乙烯乙二醇的一个吸水的部件用 perfluorosulfonic 酸( PFSA )准备了( M w = 400 )( PEG400 )作为一毛孔形成代理人。木钉的存在和扔的答案的阶段分离上并且在包括他们的孔的 UF 膜的形态学和表演上的 PFSA 的集中的效果，水流动，牛的浆液白朊(BSA ) 的拒绝蛋白质，和犯规反的性质被调查。在浇蒸汽的暴露之上的阶段图，粘性和阶段分离证明 PEG400 和 PFSA 支持了扔的答案的 demixing。扫描电子显微镜学大小证明 PVDF-PFSA 混合膜比本国的 PVDF 膜有更多的 macropores 和指状的结构。PVDF-PFSA 膜(5 wt-%PEG400 + 5 wt-% PFSA ) 有 141.7 L/m2 (25 %) 的纯水流动一？？

英文摘要：

High performance polyvinylidene fluoride （PVDF） flat sheet ultrafiltration （UF） membranes have been prepared by an immersion precipitation phase inversion method using perfluorosulfonic acid （PFSA） as a pore former and as a hydrophilic component of the membranes and polyethylene glycol （Mw = 400） （PEG400） as a pore forming agent. The effects of the presence of PEG and the concentration of the PFSA on the phase separation of the casting solutions and on the morphologies and performance of UF membranes including their porosity, water flux, rejection of bovine serum albumin （BSA） protein, and anti-fouling property were investigated. Phase diagrams, viscosities and the phase separations upon exposure to water vapor showed that both PEG400 and PFSA promoted demixing of the casting solution. Scanning electron microscopy measurements showed that the PVDF-PFSA blend membranes had more macropores and finger-like structures than the native PVDF membranes. The PVDF-PFSA membrane （5 wt-% PEG400 ＋ 5 wt-% PFSA） had a pure water flux of 141.7L/m2.h, a BSA rejection of 90.1% and a relative pure water flux reduction （RFR） of 15.28%. These properties were greatly superior to those of the native PVDF membrane （pure water flux of 5.6 L/m2. h, BSA rejection of 96.3% and RFR of 42.86%）.