Terpolymers of Acrylonitrile, Acrylic Acid, and Alkyl Acrylates: Effect of Alkyl Acrylate on the Thermal Properties of Copolymers

Vashchenko, A.F.; Toms, R.V.; Balashov, M.S.; Pichkunov, N.; Gervald, A.Y.; Prokopov, N.I.; Maksimov, N.M.; Plutalova, A.V.; Chernikova, E.V.

Авторы: Vashchenko A.F., Toms R.V., Balashov M.S., Pichkunov N., Gervald A.Yu, Prokopov N.I., Maksimov N.M., Plutalova A.V., Chernikova E.V.
Журнал: Polymer Science, Series B
Том: 63
Номер: 6
Год издания: 2021
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 802
Последняя страница: 820
DOI: 10.1134/s1560090421060294
Аннотация: Using asymmetric trithiocarbonate-mediated reversible addition-fragmentation chain transferpolymerization, terpolymers of acrylonitrile with acrylic acid and alkyl acrylate are synthesized; methylacrylate, butyl acrylate, 2-ethylhexyl acrylate, and lauryl acrylate are used as an alkyl acrylate. The molecular structure of the terpolymers is set by varying composition of the monomer mixture and regime ofintroducing acrylic acid and alkyl acrylate into the reaction medium, instantaneously or continuously inthe course of synthesis, and the molecular weight of the terpolymer is specified by the concentration oftrithiocarbonate. Study of the thermal behavior of the synthesized terpolymers shows that the temperatureinterval of cyclization and the intensity of heat release depend on the amount and molar ratio of acrylicacid to alkyl acrylate. At the molar fraction of acrylonitrile ~90%, the nature of alkyl acrylate insignificantly affects the thermal effect of cyclization of nitrile groups; however, the distribution of acrylic acidand acrylonitrile units in the terpolymer influences the ratio between ionic and radical mechanisms ofcyclization. Similar effects are observed in the thermal treatment of the terpolymers in air. An analysis ofa change in the chemical structure of the terpolymers upon thermal treatment in an inert atmosphere andin air indicates that lengthening of the alkyl substituent in alkyl acrylate contributes to an increase in thelength of the system of conjugated bonds and the effect of chain microstructure on it becomes more pronounced on going from methyl acrylate to lauryl acrylate.
Добавил в систему: Черникова Елена Вячеславовна

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

Интеллектуальная Система Тематического Исследования НАукометрических данных

Terpolymers of Acrylonitrile, Acrylic Acid, and Alkyl Acrylates: Effect of Alkyl Acrylate on the Thermal Properties of Copolymersстатья

Прикрепленные файлы