以聚氯乙烯(PVC)为膜材料，N,N-二甲基乙酰胺(DMAc)为溶剂，全氟磺酸(PFSA)为添加剂，采用湿法制备了性能较好的PVC中空纤维共混超滤膜。研究了芯液组成对PVC-PFSA中空纤维膜性能的影响，研究结果表明：纯水通量随全氟磺酸浓度的增加而增加，可达153 L•m-2•h-1•bar-1。（换算成Pa）通过调节芯液中DMAc的含量，可以有效调控PVC-PFSA中空纤维膜的内表面和断面结构。PFSA含量2.5%，随着芯液中DMAc含量的增加，PVC-PFSA中空纤维膜断面的双排指状孔逐渐向单排指状孔过渡，孔隙率增大。当DMAc含量增加到95%时，在PVC-PFSA中空纤维膜的内表面可以形成明显的多孔状结构，膜通量大幅度提高，可达118 L•m-2•h-1•bar-1

PVC-PFSA hollow fiber blend ultrafiltration membrane were prepared using polyvinyl chloride (PVC) as a membrane material, N, N-dimethylacetamide (DMAc) as solvent, and perfluorinated sulfonic acid (PFSA) as additive. The effects of bore fluid composition on the performance of PVC-PFSA hollow fiber composite membrane were investigated. The results show that pure water permeation flux increase with the PFSA concentration and reach to 153 L•m-2•h-1•bar-1. （换算成Pa）The microstructure of PVC-PFSA hollow fiber membrane could be effectively controlled by adjusting the content of DMAc in the bore solution. With the increase of DMAc content, double finger-shaped voids on the cross-section of PVC-PFSA hollow fiber membrane gradually transition to a single row of finger void, porosity increases at the same time. Porous sponge-like structure appeared on the inner surface when the DMAc content increased to 95%, and the membrane flux increased to 118 L•m-2•h-1•bar-1.

[1]Wakizoe M, Velev O A, Srinivasan S. Analysis of proton exchange membrane fuel cell performance with
alternate membranes. Electrochimica Acta. 1995, 40 (3): 335-344.
[2]程殿彬. 离子膜法制碱生产技术. 北京：化学工业出版社, 1998年第一版.
[3]Stucki S, Baumann H, Kotu C R. Performance of a pressurized electrochemical ozone generator . Applies Electrochemistry. 1987, 17: 773-778.
[4]McelroyJ F. SPE water electrolyzers in support of mission from planet earth. Journal of Power Sources. 1991, 36: 219-223.
[5]Inaba M. Ogumi Z. Takehara Zenichiro. Application of the solid polymer electrolyte method to organic electrochemistry; 17: Indirect electrochemical debromination using viologens as microscopic phase-transfer mediators. Journal of  Electrochemical Society. 1994, 141: 2579-2586.
[6]Yasuda A. Doi K. Yamaga N. Machanism of the sensitivity of the planar cosensor and it dependency on humidity. Journal of Electrochemical Society. 1992, 139: 3224-3229.
[7]Jian Xu, Zhen-Liang Xu. Poly (vinyl chloride) (PVC) hollow fiber ultrafiltration membranes prepared from PVC/additives/solvent. J. Membr. Sci., 2002, 258: 203-212.
[8]Xu Z L, Qusay F A. Polyethersulfone (PES) hollow fiber ultrafiltration membranes prepared by PES/non-solvent/NMP solution [J]. J. Membr. Sci. 2004, 233: 101-111.
[9]Chung T S, Xu Z L, Lin W H. Fundamental understanding of the effect of air-gap distance on the fabrication of hollow fiber membranes [J]. J. Appl. Polym. Sci. 1999, 72: 379-395.
[10]Yu L Y, Xu Z L, Shen H M, Yang H. Preparation and characterization of PVDF-SiO2 composite hollow fiber UF membrane by sol-gel method [J]. J. Membr. Sci. 2009, 337(1-2): 257-265.
[11]Feng C S, Shi B L, Wu Y L. Preparation and properties of microporous membrane from poly(vinylidene fluoride-co-tetrafluoroethylene) (F2.4) for membrane distillation [J]. J. Membr. Sci. 2004, 237: 15-24.
[12]Li J F, Xu Z L, Yang H. Hydrophilic microporous PES membranes prepared by PES/PEG/DMAc casting solutions [J]. J. Appl. Polym. Sci. 2008, 107: 4100-4108.