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    柴 鹏, 邵柯涵, 骆春佳, 晁 敏, 颜录科. 多孔聚丙烯腈纤维膜的制备及油/水分离性能[J]. 功能高分子学报,2023,36(4):399-407. doi: 10.14133/j.cnki.1008-9357.20230408001
    引用本文: 柴 鹏, 邵柯涵, 骆春佳, 晁 敏, 颜录科. 多孔聚丙烯腈纤维膜的制备及油/水分离性能[J]. 功能高分子学报,2023,36(4):399-407. doi: 10.14133/j.cnki.1008-9357.20230408001
    CHAI Peng, SHAO Kehan, LUO Chunjia, CHAO Min, YAN Luke. Preparation of Porous Polyacrylonitrile Fibrous Membranes and Their Properties for Oil/Water Separation[J]. Journal of Functional Polymers, 2023, 36(4): 399-407. doi: 10.14133/j.cnki.1008-9357.20230408001
    Citation: CHAI Peng, SHAO Kehan, LUO Chunjia, CHAO Min, YAN Luke. Preparation of Porous Polyacrylonitrile Fibrous Membranes and Their Properties for Oil/Water Separation[J]. Journal of Functional Polymers, 2023, 36(4): 399-407. doi: 10.14133/j.cnki.1008-9357.20230408001

    多孔聚丙烯腈纤维膜的制备及油/水分离性能

    Preparation of Porous Polyacrylonitrile Fibrous Membranes and Their Properties for Oil/Water Separation

    • 摘要: 首先采用静电纺丝制备聚丙烯腈/聚乙烯吡咯烷酮(PAN/PVP)纤维膜,再经水浸渍处理获得多孔聚丙烯腈(PPAN)纤维膜。通过傅里叶变换红外(FT-IR)光谱、热重分析(TGA)探究纤维成孔机理,采用X射线光电子能谱(XPS)研究多孔纤维膜中PAN与PVP分子间相互作用力;同时探究PAN与PVP质量比对多孔纤维膜形貌、比表面积、润湿性、力学性能、油/水分离性能的影响,并确定最佳配比。结果表明:当m(PAN)/m(PVP)=1∶2时,PPAN纤维膜具有较高的力学性能;对正己烷/水混合物的分离通量高达(46318 ± 3879) L/(m2·h·bar)(1 bar=0.1 MPa),分离效率为(96.01 ± 0.38)%;还实现了对不同种类油/水混合物的高效分离。此外,该PPAN纤维膜表现出优异的循环分离性能,经10次循环分离后,通量损失率仅为8.9%。

       

      Abstract: First, polyacrylonitrile/polyvinyl pyrrolidone (PAN/PVP) fibrous membrane was prepared by electrospinning, and then porous polyacrylonitrile (PPAN) fibrous membrane was obtained by water impregnation. Fourier transform infrared (FT-IR) spectra and thermogravimetric analysis (TGA) were used to explore the mechanism of fiber pore-forming, and X-ray photoelectron spectroscopy (XPS) was used to study the interaction between PAN and PVP molecules in the porous fibrous membrane. At the same time, the effects of mass ratio of PAN to PVP on the morphology, surface area, wettability, mechanical properties, and oil/water separation performance of fibrous membrane were investigated, and the optimal mass ratio was determined. Results showed that when m(PAN)/m(PVP) was 1∶2, PPAN fibrous membrane showed higher mechanical properties. The separation flux of the n-hexane/water mixture was (46318 ± 3879) L/(m2·h·bar) (1 bar=0.1 MPa), and the efficiency was (96.01 ± 0.38)%. It also realized the efficient separation of different kinds of oil/water mixtures. In addition, PPAN fibrous membrane showed excellent cyclic separation performance, and the flux loss rate was only 8.9% after ten cycles of separation.

       

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