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Kinetics of Carbon Dioxide Terpolymerization with Propylene Oxide and Hexene Oxide

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Abstract

The kinetics of terpolymerization of CO2 with propylene oxide and hexene oxide in the presence of a binary catalytic system salenCoDNP/PPNCl was studied for the first time. The reaction rate was determined by measuring the CO2 uptake with time during terpolymerization. The dependences of the reaction rate and terpolymer composition on the mole fractions of epoxides in the feed were presented. The relationship between the rate constants of the insertion of various epoxides in the copolymers was determined. The glass transition temperatures of aliphatic polycarbonates depend on their composition and varied from 26.3 to –9.8°С.

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ACKNOWLEDGMENTS

We are grateful to A.V. Chernyak for recording the 1Н NMR spectra and to E.O. Perepelitsina for analysis of the molecular mass distribution of terpolymers.

Funding

This study was performed under government contract (state registration no. АААА-А19-119041090087-4) using the equipment of the Analytical Multiaccess Center of the Institute of Problems of Chemical Physics, Russian Academy of Sciences.

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Authors and Affiliations

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

    O. M. Chukanova, N. O. Garifullin, O. G. Sheverdenkina & I. V. Sedov

  2. Faculty of Fundamental Physical and Chemical Engineering, Moscow State University, 119991, Moscow, Russia

    K. O. Korenkov & I. V. Sedov

Authors
  1. O. M. Chukanova
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  2. K. O. Korenkov
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  3. N. O. Garifullin
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  4. O. G. Sheverdenkina
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  5. I. V. Sedov
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Corresponding author

Correspondence to O. M. Chukanova.

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Translated by L. Smolina

Abbreviations: PO, propylene oxide; BO, butene oxide; HO, hexene oxide; salen, (R;R)-N;N'-bis-(3;5-di-tert-butylsalycilidene)-1,2-diaminocyclohexane; DNP, 2,4-dinitrophenoxide; PPNCl, bis-(triphenylphosphine)iminium chloride; NMR, nuclear magnetic resonance; GPC, gel-permeation chromatography; ММ, molecular mass; DSC, differential scanning calorimetry; THF, tetrahydrofuran; TOF, turnover frequency; f, mole fraction of epoxide in a mixture of two epoxides; F, molar fraction of units with one epoxide in terpolymer.

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Chukanova, O.M., Korenkov, K.O., Garifullin, N.O. et al. Kinetics of Carbon Dioxide Terpolymerization with Propylene Oxide and Hexene Oxide. Kinet Catal 61, 569–574 (2020). https://doi.org/10.1134/S0023158420030088

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  • DOI: https://doi.org/10.1134/S0023158420030088

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