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Investigation of poly(vinylidene chloride) distribution in perfluorinated cation-exchange membranes MF-4SK upon UV- and γ-initiated graft polymerization

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Abstract

A new process for grafting poly(vinylidene chloride) (PVDC) to the membrane material MF-4SK by UV-initiated graft polymerization of the monomer from the gas phase has been developed. Modified membranes containing up to 20 wt % of UV-grafted PVDC have been obtained. Microphotographs of thin sections of the modified membranes have been investigated. It has been shown that the pretreatment of the membranes and variation of UV- or γ-grafting conditions make it possible to achieve an uniform distribution of grafted PVDC both along the thickness of the membrane and in a thin surface layer. The values of the parameters determining the character of the distribution have been estimated. Numerical simulation of the UV- and γ-initiated graft polymerization of VDC gave solutions for the grafted-PVDC distribution fitting with the experimental data.

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Authors and Affiliations

  1. Institute of Energy Problems of Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia

    E. F. Abdrashitov, V. Ch. Bokun, D. A. Kritskaya & A. N. Ponomarev

Authors
  1. E. F. Abdrashitov
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  2. V. Ch. Bokun
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  3. D. A. Kritskaya
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  4. A. N. Ponomarev
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Correspondence to E. F. Abdrashitov.

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Original Russian Text © E.F. Abdrashitov, V.Ch. Bokun, D.A. Kritskaya, A.N. Ponomarev, 2008, published in Khimiya Vysokikh Energii, 2008, Vol. 42, No. 6, pp. 469–476.

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Abdrashitov, E.F., Bokun, V.C., Kritskaya, D.A. et al. Investigation of poly(vinylidene chloride) distribution in perfluorinated cation-exchange membranes MF-4SK upon UV- and γ-initiated graft polymerization. High Energy Chem 42, 419–425 (2008). https://doi.org/10.1134/S0018143908060015

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  • DOI: https://doi.org/10.1134/S0018143908060015

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