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Controlled Copolymerization of Acrylonitrile and Ethyl 2-cyanoacrylate under Reversible Addition-Fragmentation Chain Transfer Conditions and Thermal Behavior of the Obtained Copolymersстатья
- Авторы: Toms R.V., Gerval’d A.Yu, Balashov M.S., Prokopov N.I., Plutalova A.V., Chernikova E.V.
- Журнал: Polymer Science, Series B
- Том: 64
- Номер: 6
- Год издания: 2022
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 824
- Последняя страница: 834
- DOI: 10.1134/S1560090422700592
- Аннотация: Copolymers of acrylonitrile and ethyl 2-cyanoacrylate have been synthesized for the first time. It has been shown that the copolymers with controllable molecular mass and narrow molecular mass distribution are formed under conditions of radical initiation in the presence of 2-(dodecylthiocarbonothioylthio)-2-methylpropionic acid as a reversible chain transfer agent. Relative reactivities of the monomers in the copolymerization (r1 = 0.052 ± 0.02 for acrylonitrile and r2 = 54.5 ± 7.2 for ethyl 2-cyanoacrylate) have been determined. Copolymers with different microstructure have been synthesized using different methods to introduce ethyl 2-cyanoacrylate in the copolymerization (simultaneous and continuous charging). It has been shown that two competing processes, depolymerization and cyclization of the nitrile units, occur during heating of the copolymers under inert atmosphere. Probability of depolymerization has been increased with the increase in the fraction of ethyl 2-cyanoacrylate in the copolymer and the change of the gradient copolymer structure to the statistical one.
- Добавил в систему: Черникова Елена Вячеславовна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | PSSB824.pdf | 1,2 МБ | 13 февраля 2023 [chernikova_elena] |