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

作　　者：Runlin Han Yongli Xie Xufeng Ma 

机构地区：[1]School of Petroleum and Chemical Engineering,Dalian University of Technology

出　　处：《Chinese Journal of Chemical Engineering》2019年第4期877-883,共7页中国化学工程学报（英文版）

基　　金：Supported by the Natural Science Foundation of China(51503089);the Fundamental Research Funds for the Central Universities(DUT18JC07,DUT18RC(4)061)

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.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 

分 类 号：TQ[化学工程]