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Effect of γ-irradiation and thermal annealing on the molecular–topological structure of a copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether)

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Abstract

The molecular–topological structure of a copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether) subjected to γ-irradiation and thermal annealing has been studied for the first time with the use of thermomechanical spectrometry. The pseudonetwork structure of the copolymer contains an amorphous block (interjunction chains) and crystalline segments (branching points). The diblock amorphous and crystalline structure with a crystal structure fraction of 0.21 transformed into an almost completely amorphous structure with a crystallite fraction of 0.06 after the irradiation of the copolymer at a dose of 600 kGy. Thermal annealing at 483 K formed a new structure: a high-temperature amorphous block.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia

    Yu. A. Olkhov & S. R. Allayarov

  2. Faculty of Mechanics and Mathematics, Moscow State University, Moscow, 119991, Russia

    R. S. Allayarov

  3. Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama, AL 35487-0336, USA

    D. A. Dixon

Authors
  1. Yu. A. Olkhov
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  2. S. R. Allayarov
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  3. R. S. Allayarov
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  4. D. A. Dixon
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Corresponding author

Correspondence to S. R. Allayarov.

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Original Russian Text © Yu.A. Olkhov, S.R. Allayarov, R.S. Allayarov, D.A. Dixon, 2017, published in Khimiya Vysokikh Energii, 2017, Vol. 51, No. 2, pp. 109–115.

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Olkhov, Y.A., Allayarov, S.R., Allayarov, R.S. et al. Effect of γ-irradiation and thermal annealing on the molecular–topological structure of a copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether). High Energy Chem 51, 101–107 (2017). https://doi.org/10.1134/S0018143917020102

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  • DOI: https://doi.org/10.1134/S0018143917020102

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