Porous organic polymer as fillers for fabrication of defect-free PIM-1 based mixed matrix membranes with facilitating CO2-transfer chain

• DOI: 10.1016/j.memsci.2018.07.018
• Publication Date: 2018-07-10T07:02:55Z
• Authors: Chenhui Wang; Fangyuan Guo; He Li; Jian Xu; Jun Hu; Honglai Liu
• Keywords: Barrer

Abstract Considering both molecular sieving effect and compatibility of filler-polymer interface, the main challenges in the fabrication of excellent mixed matrix membranes (MMMs) are the selection of fillers. Here, porous organic polymer (POP) is chosen as fillers to fabricate a series of novel PIM-1 based MMMs for CO2 separation. TPFC-based POPs showed highly selective CO2 adsorption capacity and good interfacial compatibility with PIM-1 matrix. Moreover, amine modified POPs in MMMs can provide specific transfer chains for facilitating CO2 molecules separation. As a result, the obtained PIM-TPFC-CH2NH2 MMM exhibited excellent CO2 permeability of 7730 barrer and selectivity of 45.9 and 36.4 for CO2/N2 and CO2/CH4 gas pairs, far beyond the 2008 Robeson upper bound and surpassed most reported state-of-the-art MMMs.