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Synthesis of Ethylene–Vinyl Acetate Copolymers by Reversible Addition–Fragmentation Chain-Transfer Radical Polymerization

  • Macromolecular Compounds and Polymeric Materials
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Abstract

Reversible addition–fragmentation chain-transfer radical copolymerization of ethylene with vinyl acetate in the presence of azobis(isobutyronitrile) and xanthate as a chain-transfer agent was studied. Products containing 12–42 mol % vinyl acetate units were prepared under varied reaction conditions. The glass transition points and degradation temperatures of the polymers were determined. The rheological properties of ethylene–vinyl acetate copolymers were studied in detail. The effect of additions of the copolymers synthesized on the rheological characteristics of diesel fuel was evaluated. The ethylene–vinyl acetate copolymers synthesized reduce the limiting filterability temperature of the diesel fuel.

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ACKNOWLEDGMENTS

The authors are grateful to Cand. Sci. (Chem.) R.S. Borisov for determining the structural-group composition of the diesel fuel samples by two-dimensional gas chromatography with mass-spectrometric detection.

Funding

The study was performed within the framework of the government assignment for the Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences (FFZN-2022-0005) using the equipment of the Center for Shared Use Analytical Center for Problems of Deep Oil Refining and Petroleum Chemistry, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences.

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Authors and Affiliations

Authors

Contributions

G.O. Karpov and A.A. Morontsev: development of the copolymerization procedure and synthesis of the copolymers; S.O. Il’in: rheological studies of the copolymers and diesel fuels containing additives of the synthesized copolymers; M.U. Sultanova and V.O. Samoilov: determination of the cold-filter plugging points of diesel fuels with additions of the copolymers synthesized; M.V. Bermeshev: analysis of the copolymers synthesized by X-ray diffraction and differential scanning calorimetry.

Corresponding author

Correspondence to G. O. Karpov.

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The authors declare that they have no conflict of interest.

Additional information

Translated from Zhurnal Prikladnoi Khimii, No. 1, pp. 60–68, August, 2023 https://doi.org/10.31857/S0044461823010085

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Karpov, G.O., Morontsev, A.A., Ilyin, S.O. et al. Synthesis of Ethylene–Vinyl Acetate Copolymers by Reversible Addition–Fragmentation Chain-Transfer Radical Polymerization. Russ J Appl Chem 96, 50–58 (2023). https://doi.org/10.1134/S1070427223010081

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  • DOI: https://doi.org/10.1134/S1070427223010081

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