Electrospinning organic solvent resistant preoxidized poly(acrylonitrile) nanofiber membrane and its properties

doi:10.1016/j.cjche.2022.01.030

Chinese Journal of Chemical Engineering ›› 2023, Vol. 53 ›› Issue (1): 289-299.DOI: 10.1016/j.cjche.2022.01.030

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Electrospinning organic solvent resistant preoxidized poly(acrylonitrile) nanofiber membrane and its properties

Zhiwei Du^1,2, Jinxue Cheng^1,2, Qinglin Huang^1,2, Mingxing Chen³, Changfa Xiao⁴

1. State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tianjin 300387, China;
2. Department of Material Science and Engineering, Tiangong University, Tianjin 300387, China;
3. College of Textile and Garments, Hebei University of Science and Technology, Shijiazhuang 050018, China;
4. Fiber Materials Research Center, Shanghai University of Engineering Science, Shanghai 201620, China

Received:2021-09-17 Revised:2022-01-23 Online:2023-04-08 Published:2023-01-28
Contact: Qinglin Huang,E-mail:huangqinglin@tiangong.edu.cn;Mingxing Chen,E-mail:mxchen1990@163.com
Supported by:
This work was supported by the Science and Technology Plans of Tianjin (18PTSYJC00170), the Young Elite Scientists Sponsorship Program by China Association for Science and Technology ( YESS20160168). The Analytical & Testing Center of Tiangong University was appreciated.

Electrospinning organic solvent resistant preoxidized poly(acrylonitrile) nanofiber membrane and its properties

Zhiwei Du^1,2, Jinxue Cheng^1,2, Qinglin Huang^1,2, Mingxing Chen³, Changfa Xiao⁴

1. State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, Tianjin 300387, China;
2. Department of Material Science and Engineering, Tiangong University, Tianjin 300387, China;
3. College of Textile and Garments, Hebei University of Science and Technology, Shijiazhuang 050018, China;
4. Fiber Materials Research Center, Shanghai University of Engineering Science, Shanghai 201620, China

通讯作者: Qinglin Huang,E-mail:huangqinglin@tiangong.edu.cn;Mingxing Chen,E-mail:mxchen1990@163.com
基金资助:
This work was supported by the Science and Technology Plans of Tianjin (18PTSYJC00170), the Young Elite Scientists Sponsorship Program by China Association for Science and Technology ( YESS20160168). The Analytical & Testing Center of Tiangong University was appreciated.

Abstract

Abstract: A high performance preoxidized poly(acrylonitrile) (O-PAN) nanofiber membrane with excellent solvent resistance, thermal stability and flexibility was fabricated by the preoxidation of electrospun PAN nanofiber membrane. The performance of resultant O-PAN nanofiber membrane was optimized by altering the PAN concentration and preoxidation temperature. The results showed that the O-PAN nanofiber membrane which made from PAN concentration of 14% (mass) and preoxidation temperature of 250.0 ℃ have a more optimal comprehensive performance. In the long-term separation test of SiO₂ particle (1 μm) in DMAc suspension, the permeate flux of O-PAN nanofiber membrane stabilized at 227.91 L·m^-2·h^-1 (25 ℃, 0.05 MPa) while the SiO₂ rejection above 99.6%, which showed excellent solvent resistance and separation performance. In order to further explore the application of the O-PAN nanofiber membrane, the O-PAN nanofiber membrane was treated with fluoride and used in oil/water separation process. The O-PAN nanofiber membrane after hydrophobic treatment showed excellent hydrophobicity and good oil/water separation performance with the permeate flux about 969.59 L·m^-2·h^-1 while the separation efficiency above 96.1%. The O-PAN nanofiber membrane exhibited a potential application prospect in harsh environment separation.

Key words: Poly(acrylonitrile) (PAN), Preoxidation, Nanofiber membrane, Solvent resistance, Oil/water separation

摘要： A high performance preoxidized poly(acrylonitrile) (O-PAN) nanofiber membrane with excellent solvent resistance, thermal stability and flexibility was fabricated by the preoxidation of electrospun PAN nanofiber membrane. The performance of resultant O-PAN nanofiber membrane was optimized by altering the PAN concentration and preoxidation temperature. The results showed that the O-PAN nanofiber membrane which made from PAN concentration of 14% (mass) and preoxidation temperature of 250.0 ℃ have a more optimal comprehensive performance. In the long-term separation test of SiO₂ particle (1 μm) in DMAc suspension, the permeate flux of O-PAN nanofiber membrane stabilized at 227.91 L·m^-2·h^-1 (25 ℃, 0.05 MPa) while the SiO₂ rejection above 99.6%, which showed excellent solvent resistance and separation performance. In order to further explore the application of the O-PAN nanofiber membrane, the O-PAN nanofiber membrane was treated with fluoride and used in oil/water separation process. The O-PAN nanofiber membrane after hydrophobic treatment showed excellent hydrophobicity and good oil/water separation performance with the permeate flux about 969.59 L·m^-2·h^-1 while the separation efficiency above 96.1%. The O-PAN nanofiber membrane exhibited a potential application prospect in harsh environment separation.

关键词: Poly(acrylonitrile) (PAN), Preoxidation, Nanofiber membrane, Solvent resistance, Oil/water separation

Zhiwei Du, Jinxue Cheng, Qinglin Huang, Mingxing Chen, Changfa Xiao. Electrospinning organic solvent resistant preoxidized poly(acrylonitrile) nanofiber membrane and its properties[J]. Chinese Journal of Chemical Engineering, 2023, 53(1): 289-299.

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Electrospinning organic solvent resistant preoxidized poly(acrylonitrile) nanofiber membrane and its properties

Electrospinning organic solvent resistant preoxidized poly(acrylonitrile) nanofiber membrane and its properties

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