采用浸没沉淀相转化法制备聚偏氟乙烯(PVDF)平板膜,考察亲水性添加剂聚乙烯吡咯烷酮(PVP)的分子量对膜微结构及性能的影响.结果表明,以PVP 58000、PVP 230000为添加剂所制得的膜的纯水通量明显高于以PVP 10000、PVP 780000为添加剂的膜,且膜内部的大孔结构得到充分发展.同时,对膜的亲水性及抗污染性能进行测试,结果发现,高相对分子质量的PVP由于部分残留在膜内从而有效地改善了膜表面的亲水性,其中PVP 230000作添加剂时膜的抗污染能力最强,对质量分数为1 000×10-6的BSA水溶液的稳定渗透率达120 L/(m2· h·0.1 MPa)左右.
参考文献
| [1] | Khayet M;Feng C Y;Khulbe K C et al.Preparation and characterication of polyvinylidene fluoride hollow fiber membranes for ultrafiltration[J].Polymer,2002,43:3879-3890. |
| [2] | Sukitpaneenit P;Chung T S .Molecular elucidation of morphology and mechanical properties of PVDF hollow fiber membranes from aspects of phase inversion,crystallization and rheology[J].Journal of Membrane Science,2009,340:192-205. |
| [3] | Boributh S;Chanachai A;Jiraratananon R .Modification of PVDF membrane by chitosan solution for reducing[J].Journal of Membrane Science,2009,342:97-104. |
| [4] | 宋春亮,曹义鸣,介兴明,于海军,康国栋,刘健辉,袁权.PSf对提高PVDF/PSf/TriO2共混膜抗污染性的作用[J].膜科学与技术,2010(04):14-18. |
| [5] | Wang Dongliang;Li K .Preparation and characterization of polyvinylidene fluoride (PVDF) hollow fiber membranes[J].Journal of Membrane Science,1999(2):211-220. |
| [6] | Chakrabarty B;Ghoshal AK;Purkait AK .Preparation, characterization and performance studies of polysulfone membranes using PVP as an additive[J].Journal of Membrane Science,2008(1/2):36-47. |
| [7] | Xu Zhen-Liang;Chung Tai-Shung;Huang Yu .Effect of Polyvinylpyrrolidone Molecular Weights on Morphology,Oil/Water Separation,Mechanical and Thermal Properties of Polyetherimide/Polyvinylpyrrolidone Hollow Fiber Membranes[J].Journal of Applied Polymer Science,1999(9):2220-2233. |
| [8] | Yu, LY;Shen, HM;Xu, ZL .PVDF-TiO2 Composite Hollow Fiber Ultrafiltration Membranes Prepared by TiO2 Sol-Gel Method and Blending Method[J].Journal of Applied Polymer Science,2009(3):1763-1772. |
| [9] | Liu F;Moghareh Abed M R;Li K .Preparation and characterization of poly (vinylidene fluoride) (PVDF)based ultrafiltration membranes using nano γ-Al2 O3[J].Journal of Membrane Science,2011,366:97-103. |
| [10] | Hua J;Xu Y Y;Zhu L P et al.Fabrication and characterication of a novel TiO2 nanoparticle self-assembly membrane with improved fouling resistance[J].Journal of Membrane Science,2009,326:659-666. |
| [11] | Jung B;Yoon JK;Kim B;Rhee HW .Effect of molecular weight of polymeric additives on formation, permeation properties and hypochlorite treatment of asymmetric polyacrylonitrile membranes[J].Journal of Membrane Science,2004(1/2):45-57. |
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