SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (4): 877-883.DOI: 10.1016/j.cjche.2018.10.005

• Separation Science and Engineering • Previous Articles     Next Articles

Crosslinked P84 copolyimide/MXene mixed matrix membrane with excellent solvent resistance and permselectivity

Runlin Han, Yongli Xie, Xufeng Ma   

  1. School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, China
  • Received:2018-09-03 Revised:2018-09-27 Online:2019-06-14 Published:2019-04-28
  • Contact: Runlin Han
  • Supported by:
    Supported by the Natural Science Foundation of China (51503089) and the Fundamental Research Funds for the Central Universities (DUT18JC07, DUT18RC(4)061).

Crosslinked P84 copolyimide/MXene mixed matrix membrane with excellent solvent resistance and permselectivity

Runlin Han, Yongli Xie, Xufeng Ma   

  1. School of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, China
  • 通讯作者: Runlin Han
  • 基金资助:
    Supported by the Natural Science Foundation of China (51503089) and the Fundamental Research Funds for the Central Universities (DUT18JC07, DUT18RC(4)061).

Abstract: MXene is a novel 2D lamellar material with excellent hydrophilicity and permselectivity. MXene was introduced in the P84 polymer matrix and the matrix was crosslinked with triethylenetetramine (TETA) to improve the permselectivity and solvent resistance of the polyimide membrane. The membrane was characterized with SEM, AFM and ATR-FTIR, and effects of MXene content on the membrane morphology and separation performance are investigated. The membrane prepared with 18% P84 and 1% MXene shows high rejection (100%) to gentian violet (408) and high flux (268 L·m-2·h-1) at 0.1 MPa and ambient temperature. MXene endows the membrane with much water channel and denser functional layer which improves the membrane performance obviously. The membrane shows excellent solvent resistance to dimethylformamide (DMF), acetone and methanol after crosslinking with TETA during the 18 days of immersion.

Key words: MXene, Crosslinking, Polyimide membrane, Mixed Matrix Membrane (MMM), Solvent resistance

摘要: MXene is a novel 2D lamellar material with excellent hydrophilicity and permselectivity. MXene was introduced in the P84 polymer matrix and the matrix was crosslinked with triethylenetetramine (TETA) to improve the permselectivity and solvent resistance of the polyimide membrane. The membrane was characterized with SEM, AFM and ATR-FTIR, and effects of MXene content on the membrane morphology and separation performance are investigated. The membrane prepared with 18% P84 and 1% MXene shows high rejection (100%) to gentian violet (408) and high flux (268 L·m-2·h-1) at 0.1 MPa and ambient temperature. MXene endows the membrane with much water channel and denser functional layer which improves the membrane performance obviously. The membrane shows excellent solvent resistance to dimethylformamide (DMF), acetone and methanol after crosslinking with TETA during the 18 days of immersion.

关键词: MXene, Crosslinking, Polyimide membrane, Mixed Matrix Membrane (MMM), Solvent resistance