NDLI: Study of accessible free volume and transport properties of TFPS-co-TMSP copolymer

Content Provider	Springer Nature Link
Author	Kossov, A. A. Yushkin, A. A. Khotimskiy, V. S. Volkov, A. V.
Copyright Year	2015
Abstract	Copolymers of 1-trimethylsilyl-1-propyne (TMSP) with 1-(3,3,3-trifluoropropyldimethylsilyl)1-propyne (TFPS) as part of a systematic series with the TFPS content of the final polymer in the range of 0 to 46 mol % have been synthesized. The resulting samples have been characterized by different instrumental methods including NMR, IR, and DSC techniques. It has been shown that the accessible free volume of the polymer decreases from 30.4 to 19.1% with an increase in the proportion of TFPS units. Moreover, the gas transport properties of the membrane materials are reduced by factors of 30 (oxygen), 50 (nitrogen), and 15 (carbon dioxide), although the selectivity for the O$_{2}$/N$_{2}$ and CO$_{2}$/N$_{2}$ gas pairs increases from 1.6 to 2.5 and 2.5 to 11.5, respectively. A study of nanofiltration of organic media has shown that the ethanol permeability through the TFPS-co-TMSP copolymer material is reduced by no more than 30%, a value that is comparable with the relative decrease in the fractional free volume of the polymer. An increase in the TFPS content has improved the stability of the membrane material in ethanol (swelling ratio decreased from 61 to 39%), thereby resulting in an increase in the retention of the Orange II anionic dye (350 g/mol) from 89 to 94%.
Starting Page	783
Ending Page	790
Page Count	8
File Format	PDF
ISSN	09655441
Journal	Petroleum Chemistry
Volume Number	55
Issue Number	10
e-ISSN	15556239
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-01-06
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PTMSP TFPS-co-TMSP nanofiltration gas separation free volume Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Geochemistry and Petrology Fuel Technology Chemical Engineering Energy Engineering and Power Technology

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