Russian Journal of Physical Chemistry B

, Volume 11, Issue 8, pp 1276–1282 | Cite as

Modification of Poly(4-Methyl-2-Pentyne) in Supercritical Fluid Medium for Production of CO2-Selective Gas-Separation Membranes

  • V. G. PolevayaEmail author
  • A. M. Vorobei
  • O. I. Pokrovskiy
  • G. A. Shandryuk
  • O. O. Parenago
  • V. V. Lunin
  • V. S. Khotimskiy


The work is devoted to exploring the possibility of using supercritical fluids as media for modification of polymers offering promise for production of gas-separation membranes with the goal to improve selectivity towards CO2. The possibility is demonstrated for introduction of fragments of quaternary ammonium salts into the structure of poly(4-methyl-2-pentyne) with the help of a two-stage process: bromination of the initial polymer with N-bromosuccinimide followed by the addition of the tertiary amine—N-butylimidazol— conducted in supercritical fluids as a medium. The use of trifluoromethane as the reaction medium provides the highest degree of modification of the brominated polymer with the amine. The polymer produced under the optimized conditions demonstrates a threefold increase of the calculated selectivity of separation of CO2 and N2 in comparison with the initial poly(4-methyl-2-pentyne).


polymer membranes gas separation 1,2-disubstituted polyacetylenes chemical modification of polymers CO2 separation permeability selectivity quaternization 


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© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. G. Polevaya
    • 1
    Email author
  • A. M. Vorobei
    • 2
    • 3
  • O. I. Pokrovskiy
    • 2
  • G. A. Shandryuk
    • 1
  • O. O. Parenago
    • 2
    • 3
  • V. V. Lunin
    • 2
    • 3
  • V. S. Khotimskiy
    • 1
  1. 1.Topchiev Institute of Petrochemical SynthesisRussian Academy of SciencesMoscowRussia
  2. 2.Kurnakov Institute of General and Inorganic ChemistryRussian Academy of SciencesMoscowRussia
  3. 3.Faculty of ChemistryLomonosov Moscow State UniversityMoscowRussia

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