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Synthesis and properties of homo- and copolymers of trifluoropropyldimethylsilyl-1-propyne with trimethylsilyl-1-propyne

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Abstract

Homopolymerization of 1-(3,3,3-trifluoropropyldimethylsilyl)-1-propyne is investigated in the presence of catalysts based on tantalum (V) chloride and niobium (V) pentachloride with various cocatalysts. As a result of homopolymerization, an insoluble polymer is formed. It is established that the insolubility of the homopolymer is connected with the presence in the polymer of “pseudocrystalline” regions playing the role of physical links. Copolymerization of 1(3,3,3-trifluoropropyldimethylsilyl)-1-propyne and trimethylsilyl-1-propyne under the action of the TaCl5-Ph3Bi system is studied. The relative activity constants of monomers, whose ratio points to the formation tendency of copolymers enriched with trimethylsilyl-1-propyne at the early stages of polymerization, are estimated. It is shown that the structures and solubilities of the obtained copolymers depend on their compositions. Gas-transport and hydrophobic-hydrophilic properties for soluble samples are studied. Soluble copolymers have good film-forming properties, improved hydrophobicity, stability against hydrocarbons, and high levels of gas permeability: properties that make them promising materials for the separation of various liquids and gaseous water-organic media.

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Authors and Affiliations

  1. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991, Russia

    A. A. Kossov, A. V. Rebrov & V. S. Khotimskii

  2. Faculty of Chemistry, Moscow State University, Moscow, 119991, Russia

    V. D. Dolzhikova

Authors
  1. A. A. Kossov
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  2. A. V. Rebrov
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  3. V. D. Dolzhikova
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  4. V. S. Khotimskii
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Correspondence to A. A. Kossov.

Additional information

Original Russian Text © A.A. Kossov, A.V. Rebrov, V.D. Dolzhikova, V.S. Khotimskii, 2013, published in Russian in Vysokomolekulyarnye Soedineniya, Ser. B, 2013, Vol. 55, No. 5, pp. 568–576.

This work was supported in part by the European Commission in the 7th Framework Programme Project FP7 “DECARBit” (project FP7) and Dutch-Russian Center for advanced technologies “Gas4S” (NWO-RFBR no. 047.018.2006.014).

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Kossov, A.A., Rebrov, A.V., Dolzhikova, V.D. et al. Synthesis and properties of homo- and copolymers of trifluoropropyldimethylsilyl-1-propyne with trimethylsilyl-1-propyne. Polym. Sci. Ser. B 55, 258–265 (2013). https://doi.org/10.1134/S1560090413050047

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  • DOI: https://doi.org/10.1134/S1560090413050047

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