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245	1	0	_aAlicyclic segments upgrade hydrogen separation performance of intrinsically microporous polyimide membranes
490	0		_aJournal of Membrane Science. 611, 118363, 2020, DOI: 10.1016/j.memsci.2020.118363
520	3		_aEven with high permeability, insufficient selectivity of intrinsically microporous polyimides is a major obstacle for large-scale membrane-based separation applications. The present work proposes to increase hydrogen separation performance by incorporating deliberately chosen alicyclic segments into Tröger's Base (TB)-based polyimide backbones via copolymerization. The resulting TB-based copolyimides showed the best hydrogen separation performance (e.g., H2/CH4, H2/N2 and H2/CO2) among all state-of-the-art TB-based polyimide materials reported to date. An important contribution of enhancement in solubility selectivity to increase hydrogen separation performance was investigated for the first time in this study. The introduction of alicyclic segments significantly promoted the Langmuir affinity parameters of H2, thereby improving H2 solubility over other gas solubilities (CH4, N2 and CO2). Herein, the unique backbone architecture highlights the possibility of accessing membranes characterized by favorable hydrogen separation performance in adverse/harsh environments, as well as by solution processability, desirable physical properties for large-scale separation applications. © 2020 Elsevier B.V.
650	1	4	_aALICYCLIC SEGMENT
650	1	4	_aCOPOLYMERIZATION
650	1	4	_aHYDROGEN SEPARATION
650	1	4	_aLARGE-SCALE PRODUCTION
650	1	4	_aPOLYIMIDE
700	1	2	_aZhang Y.
700	1	2	_aLee W.H.
700	1	2	_aSeong J.G.
700	1	2	_aBae J.Y.
700	1	2	_aZhuang Y.
700	1	2	_aFeng S.
700	1	2	_aWan Y.
700	1	2	_aLee Y.M.
856	4	0	_uhttps://drive.google.com/file/d/1hIFPHrO_9xF8XQ0M5vqhllOtLtud960-/view?usp=drive_link _zPara ver el documento ingresa a Google con tu cuenta @cicy.edu.mx
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