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Effect of chloroform on the structure and gas-separation properties of poly(ether imides)

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Abstract

The FTIR spectra of poly(ether imide) films prepared from their chloroform solutions were recorded in a wide temperature interval. The cast films were shown to contain residual solvent. This residual solvent existed in films as unbound chloroform that may be removed by heating to 60–70°C and as bound chloroform that is involved in complex formation with polymers and may be removed by heating at temperatures close to their glass transition temperatures (180°C). Quantum-chemical calculations were performed for structures that model fragments and monomer units of poly(ether imides), as well as their complexes with chloroform. Chloroform was shown to be capable of preferential binding with an oxygen atom in a Ph-O-Ph′ fragment via hydrogen bonds. In this case, the conformational set of poly(ether imide) chains is changed. The above evidence is invoked to explain changes in transport characteristics with time for poly(ether imide) films cast from chloroform solutions.

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Authors and Affiliations

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

    Yu. V. Kostina, G. N. Bondarenko, A. Yu. Alent’ev & Yu. P. Yampol’skii

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  1. Yu. V. Kostina
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  2. G. N. Bondarenko
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  3. A. Yu. Alent’ev
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  4. Yu. P. Yampol’skii
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Original Russian Text © Yu.V. Kostina, G.N. Bondarenko, A.Yu. Alent’ev, Yu.P. Yampol’skii, 2006, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2006, Vol. 48, No. 1, pp. 41–48.

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Kostina, Y.V., Bondarenko, G.N., Alent’ev, A.Y. et al. Effect of chloroform on the structure and gas-separation properties of poly(ether imides). Polym. Sci. Ser. A 48, 32–38 (2006). https://doi.org/10.1134/S0965545X06010056

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  • DOI: https://doi.org/10.1134/S0965545X06010056

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