Triptycene-based copolyimides with tailored backbone rigidity for enhanced gas transport

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	Triptycene-based copolyimides with tailored backbone rigidity for enhanced gas transport
	Weidman, Jennifer R.1; Luo, Shuangjiang 1; Breier, Jaclyn M.1; Buckley, Patrick 1; Gao, Peiyuan 2; Guo, Ruilan 1
刊名	POLYMER
	2017-09-22
卷号	126 页码:314-323
关键词	Triptycene-containing Copolyimides Backbone Rigidity Gas Separation Membrane
英文摘要	A series of triptycene-based copolyimides with varying backbone rigidity was synthesized and evaluated for chain packing behavior and gas transport properties. These copolymers were composed of a rigid element with the triptycene skeleton directly linked to imide rings and a relatively flexible element containing ether linkage and CF3 substituent groups. The ratio of the two components was systematically varied to investigate the effect of increasing triptycene density and steric hindrance while decreasing CF3 and ether linkage density. Generally, increasing the percentage of the directly-linked triptycene component increased chain rigidity, interchain spacing, and fractional free volume due to more highly disrupted chain packing. Therefore, copolymers with a high fraction of the directly-linked component showed increased gas permeabilities compared to the relatively flexible homopolymer counterpart. Additionally, the increase in triptycene density introduced more ultra-fine microcavities to facilitate in sieving, allowing for a concurrent maintenance or increase in selectivity. (C) 2017 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/41255]
专题	化学研究所_其它
作者单位	1.Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Weidman, Jennifer R.,Luo, Shuangjiang,Breier, Jaclyn M.,et al. Triptycene-based copolyimides with tailored backbone rigidity for enhanced gas transport[J]. POLYMER,2017,126:314-323.
APA	Weidman, Jennifer R.,Luo, Shuangjiang,Breier, Jaclyn M.,Buckley, Patrick,Gao, Peiyuan,&Guo, Ruilan.(2017).Triptycene-based copolyimides with tailored backbone rigidity for enhanced gas transport.POLYMER,126,314-323.
MLA	Weidman, Jennifer R.,et al."Triptycene-based copolyimides with tailored backbone rigidity for enhanced gas transport".POLYMER 126(2017):314-323.