SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2024, Vol. 75 ›› Issue (11): 25-34.DOI: 10.1016/j.cjche.2024.03.036

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Investigation on the synthesis conditions of poly(4-methyl-1-pentene) hollow fiber membrane with high gas permeability and strong tensile strength

Changfeng Lu1,2, Donghai Sheng1, Lin Zhang1, Beibei Feng1, Yuan Li3   

  1. 1. State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China;
    2. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    3. Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
  • Received:2023-10-27 Revised:2024-03-12 Accepted:2024-03-13 Online:2024-08-23 Published:2024-11-28
  • Contact: Donghai Sheng,E-mail:shengdonghai@mail.tsinghua.edu.cn;Lin Zhang,E-mail:zhanglin2020@mail.tsinghua.edu.cn;Yuan Li,E-mail:liyuan@cqmu.edu.cn
  • Supported by:
    We acknowledge the support of this work by Science Fund of State Key Laboratory of Tribology, Tsinghua University (61012205321).

Investigation on the synthesis conditions of poly(4-methyl-1-pentene) hollow fiber membrane with high gas permeability and strong tensile strength

Changfeng Lu1,2, Donghai Sheng1, Lin Zhang1, Beibei Feng1, Yuan Li3   

  1. 1. State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China;
    2. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    3. Central Laboratory of Yongchuan Hospital, Chongqing Medical University, Chongqing 402160, China
  • 通讯作者: Donghai Sheng,E-mail:shengdonghai@mail.tsinghua.edu.cn;Lin Zhang,E-mail:zhanglin2020@mail.tsinghua.edu.cn;Yuan Li,E-mail:liyuan@cqmu.edu.cn
  • 基金资助:
    We acknowledge the support of this work by Science Fund of State Key Laboratory of Tribology, Tsinghua University (61012205321).

Abstract: Poly(4-methyl-1-pentene) hollow fiber membranes (PMP HFMs) are commonly used in gas separation membrane and artificial lung membrane in extracorporeal membrane oxygenation (ECMO), and its porous structure and mechanical properties have a significant impact on the performance of the membrane material. In our work, PMP HFMs were prepared by thermally induced phase separation method. Subsequently, through characterization analysis of powder X-ray diffraction, universal tensile machine, scanning electron microscope and other instruments, the effects of PMP concentration, diluent ratio, quenching temperature, air gap distance and winding speed on the membrane performance were systematically investigated to obtain optimal preparation conditions for PMP HFMs. The results showed that the PMP HFMs prepared under optimal conditions possessed good gas permeability with a nitrogen flux of 10.5 ml·MPa-1·cm-2·min-1, a surface dense layer, and a good tensile strength of 9.33 MPa. We believed that this work could provide useful references for the application of PMP membranes in the medical field.

Key words: Extracorporeal membrane oxygenation, Poly(4-methyl-1-pentene) hollow fiber membranes, Thermally induced phase separation, Bicontinuous porous structure, Gas permeability

摘要: Poly(4-methyl-1-pentene) hollow fiber membranes (PMP HFMs) are commonly used in gas separation membrane and artificial lung membrane in extracorporeal membrane oxygenation (ECMO), and its porous structure and mechanical properties have a significant impact on the performance of the membrane material. In our work, PMP HFMs were prepared by thermally induced phase separation method. Subsequently, through characterization analysis of powder X-ray diffraction, universal tensile machine, scanning electron microscope and other instruments, the effects of PMP concentration, diluent ratio, quenching temperature, air gap distance and winding speed on the membrane performance were systematically investigated to obtain optimal preparation conditions for PMP HFMs. The results showed that the PMP HFMs prepared under optimal conditions possessed good gas permeability with a nitrogen flux of 10.5 ml·MPa-1·cm-2·min-1, a surface dense layer, and a good tensile strength of 9.33 MPa. We believed that this work could provide useful references for the application of PMP membranes in the medical field.

关键词: Extracorporeal membrane oxygenation, Poly(4-methyl-1-pentene) hollow fiber membranes, Thermally induced phase separation, Bicontinuous porous structure, Gas permeability