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Open AccessArticle

Modification of Poly(4-methyl-2-pentyne) in the Supercritical Fluid Medium for Selective Membrane Separation of CO2 from Various Gas Mixtures

1
A.V. Topchiev Institute of Petrochemical Synthesis RAS, Leninsky pr., 29, 119991 Moscow, Russian
2
Kurnakov Institute of General and Inorganic Chemistry RAS, Leninsky pr., 31, 119991 Moscow, Russian
3
Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, 21502 Geesthacht, Germany
*
Authors to whom correspondence should be addressed.
Polymers 2020, 12(11), 2468; https://doi.org/10.3390/polym12112468
Received: 18 September 2020 / Revised: 19 October 2020 / Accepted: 20 October 2020 / Published: 24 October 2020
(This article belongs to the Section Polymer Applications)
The modification of highly permeable films of brominated 1,2-disubstituted polyacetylene, poly(4-methyl-2-penthyne), via incorporation of in situ formed butylimidazolium bromide is reported for the first time. Principal possibility and efficiency of supercritical CO2 and CHF3 use as reaction media for the corresponding process, namely for quaternization of butylimidazole by brominated polymer are revealed. As a result, we prepared new membrane materials possessing promising properties such as stability toward organic solvents, good mechanical properties and significantly improved CO2-selectivity while maintaining gas permeability at high values. Comparative analysis of the results allowed us to determine content and conditions for the incorporation of butylimidazolium groups optimal for most efficient separation of CO2 from industrial gas mixtures. These results are of interest for the designing of new CO2 selective membranes. View Full-Text
Keywords: polyacetylenes; surface modification; supercritical fluids; highly permeable membranes; gas separation; quaternization; CO2 separation polyacetylenes; surface modification; supercritical fluids; highly permeable membranes; gas separation; quaternization; CO2 separation
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MDPI and ACS Style

Polevaya, V.; Vorobei, A.; Gavrikov, A.; Matson, S.; Parenago, O.; Shishatskiy, S.; Khotimskiy, V. Modification of Poly(4-methyl-2-pentyne) in the Supercritical Fluid Medium for Selective Membrane Separation of CO2 from Various Gas Mixtures. Polymers 2020, 12, 2468.

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