Effective functionalization of porous polymer fillers to enhance CO2/N2 separation performance of mixed-matrix membranes

Lee, Y. and Chuah, C.Y. and Lee, J. and Bae, T.-H. (2022) Effective functionalization of porous polymer fillers to enhance CO2/N2 separation performance of mixed-matrix membranes. Journal of Membrane Science, 647.

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Abstract

A series of porous organic polymers (denoted as PBP-x) possessing various functional groups was synthesized via Friedel�Crafts alkylation followed by post-synthetic functionalization using amine and sulfonic groups. These functionalized porous polymers were incorporated into an in-house polyimide to fabricate mixed-matrix membranes for CO2/N2 separation. Gas permeation testing revealed that these functionalized porous fillers substantially improved the CO2 separation performance. Moreover, optimizing both the functionality and pore structure of the porous fillers was found to drastically improve the CO2/N2 separation performance. In particular, the addition of 10 wt PBP-menm (menm = 1,2-methylethylenediamine) induced an ultrahigh CO2 permeability of 2988 barrers (158 higher than that of a pure polymer membrane), thus realizing excellent performance that surpasses the Robeson upper bound for CO2/N2 separation. © 2022 Elsevier B.V.

Item Type: Article
Impact Factor: cited By 0
Uncontrolled Keywords: Carbon dioxide; Filled polymers; Fillers; Gas permeable membranes; Organic polymers; Pore structure, CO2/N2 separation; Functionalizations; Functionalized; Mixed-matrix membranes; Porous fillers; Porous organic polymers; Porous polymers; Robeson upper bound; Separation performance; Upper Bound, Separation, carbon dioxide; filler; nitrogen; porous polymer, adsorption; Article; benchmarking; controlled study; desorption; diffusivity; gas; membrane; permeability; porosity; scanning electron microscopy; solubility; synthesis, Carbon Dioxide; Fillers; Membranes; Penetration; Performance; Polymers; Separation; Testing
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 09 Jun 2022 08:23
Last Modified: 09 Jun 2022 08:23
URI: http://scholars.utp.edu.my/id/eprint/33145

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