id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ws859c71k2r	Tanner J. Corrado	Development of Iptycene-Containing Polysulfones And Ladder Polymers for Gas Separation Membranes	2022		.txt	text/plain	358	12	15	To combat these challenges, molecular level design of polymer membranes to incorporate bulky structures that disrupt chain packing, linkages that rigidify the backbone, and introduction of shape-persistent architectures containing configurational free volume elements is a promising strategy. This tradeoff originates at the molecular level, where undesired free volume architectures (small, indiscriminate microcavities) arising from random chain packing in glassy polymer membranes makes it difficult to simultaneously achieve fast and selective gas transport.	cache/ws859c71k2r.txt	txt/ws859c71k2r.txt