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Kinetics of Isoprene Polymerization in the Presence of the Catalytic System NdCl3 · nCH3CH(OH)CH3-Al(i-C4H9)3-Piperylene

  • Chemical Physics of Polymer Materials
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Abstract

A kinetic model is developed for the formation of the NdCl3 · nROH complex (ROH is isopropanol and n is the number of alcohol molecules in the complex), which relates the initial diameter of NdCl3 particles with the kinetics of NdCl3 · nROH complex formation and n. A kinetic model is also developed for isoprene polymerization in the presence of the NdCl3 · nROH-Al(i-C4H9)3-piperylene catalytic system that describes the kinetics of polymerization and molecular weight characteristics of isoprene rubber. According to the simulation, it was shown that (1) the experimentally observed increase in the polymerization rate with increasing n from 0.75 to 2.43 is caused by an increase in the concentration of chain growth sites; (2) the experimentally observed dependence of the molecular weight characteristics of isoprene rubber on n is explained by the functioning of various types of chain growth sites at different values of n and the distribution of isoprene concentration over the radius of the polymer-catalyst particle (particles of the catalytic system with chains of isoprene rubber adsorbed on its surface).

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Authors and Affiliations

  1. Kazan National Research Technological University, Kazan, Republic of Tatarstan, 420015, Russia

    K. A. Tereshchenko, N. V. Ulitin, D. A. Shiyan & G. F. Al’metova

  2. Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences, Republic of Bashkortostan, Ufa, 450054, Russia

    E. M. Zakharova

  3. OAO Sintez-Kauchuk, Sterlitamak, Republic of Bashkortostan, 453110, Russia

    I. Sh. Nasyrov

  4. Bashkir State University, Ufa, Republic of Bashkortostan, 450076, Russia

    V. P. Zakharov

Authors
  1. K. A. Tereshchenko
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  2. N. V. Ulitin
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  3. D. A. Shiyan
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  4. G. F. Al’metova
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  5. E. M. Zakharova
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  6. I. Sh. Nasyrov
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  7. V. P. Zakharov
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Correspondence to N. V. Ulitin.

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Tereshchenko, K.A., Ulitin, N.V., Shiyan, D.A. et al. Kinetics of Isoprene Polymerization in the Presence of the Catalytic System NdCl3 · nCH3CH(OH)CH3-Al(i-C4H9)3-Piperylene. Russ. J. Phys. Chem. B 13, 170–176 (2019). https://doi.org/10.1134/S1990793119010299

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  • DOI: https://doi.org/10.1134/S1990793119010299

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