Unusual Role of N-Methylmorpholine N-Oxide in the Radical Polymerization of Acrylonitrile

Авторы: Toms R.V., Medvedeva S.S., Gerval’d A.Yu, Prokopov N.I., Plutalova A.V., Kulichikhin V.G., Chernikova E.V.
Журнал: Polymer Science, Series B
Том: 64
Номер: 5
Год издания: 2022
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 623
Последняя страница: 635
DOI: 10.1134/s1560090422700439
Аннотация: Radical polymerization of acrylonitrile in the presence of N-methylmorpholine N-oxide has beenperformed for the first time. It has been shown that the presence of N-methylmorpholine N-oxide leads to the decrease in the molecular mass of the polymer and induces its partial cyclization. These features have been preserved when N-methylmorpholine N-oxide has been introduced in the polymerization simultaneously with the monomer and the initiator as well as when it has been added at high conversion of the monomer.The introduction of N-methylmorpholine N-oxide into polyacrylonitrile has led to the cyclization of the nitrile units in two stages, the low-temperature one being initiated by N-methylmorpholine N-oxide and the high-temperature one, typical of pure polyacrylonitrile. The ratio between the intensity of these processes has been governed by the content of N-methylmorpholine N-oxide.
Добавил в систему: Черникова Елена Вячеславовна

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