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Published in: Polymer Science, Series B 2/2020

01-03-2020 | POLYMERIZATION

Study of the Formation of Hyperbranched Polyacrylonitrile under the Action of a New Initiating System Based on Bicyclic Tertiary Amine and Ethylene Oxide

Authors: A. E. Tarasov, A. A. Grishchuk, S. V. Karpov, Yu. V. Podval’naya, A. V. Chernyak, N. O. Garifulin, E. R. Badamshina

Published in: Polymer Science, Series B | Issue 2/2020

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Abstract

The polymerization of acrylonitrile under the action of the new initiating system 1.4-diazabicyclo[2.2.2]octane–ethylene oxide is studied. The polymerization initiated by this system is accompanied by the occurrence of intra- and intermolecular chain transfer to the polymer. It is found that cyclic ethers, such as ethylene oxide and tetrahydrofuran, facilitate the reaction of chain transfer, acting as catalysts, as confirmed by quantum chemical calculations. The study of the thermal behavior of the synthesized hyperbranched polyacrylonitrile samples in the temperature range of 175–350°C shows that heat release for these samples begins at lower temperatures and proceeds in a wider temperature range and with a lower intensity compared to a linear polymer.

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Metadata
Title
Study of the Formation of Hyperbranched Polyacrylonitrile under the Action of a New Initiating System Based on Bicyclic Tertiary Amine and Ethylene Oxide
Authors
A. E. Tarasov
A. A. Grishchuk
S. V. Karpov
Yu. V. Podval’naya
A. V. Chernyak
N. O. Garifulin
E. R. Badamshina
Publication date
01-03-2020
Publisher
Pleiades Publishing
Published in
Polymer Science, Series B / Issue 2/2020
Print ISSN: 1560-0904
Electronic ISSN: 1555-6123
DOI
https://doi.org/10.1134/S1560090420010108

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