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Thermal degradation of random copolymers of acrylonitrile with α-methylstyrene

II. Analysis of the reaction products

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Abstract

The thermal decomposition of binary copolymers of acrylonitrile with variable amounts of α-methylstyrene (2–40%) has been studied atp=10−2−10−4 torr andT=0–600°. The decomposition products (solids, liquids and gases) have been characterized by IR and UV spectroscopy, gas chromatography, vapor pressure osmometry and elemental analysis. The decomposition mechanism has been ascertained on the basis of the obtained results.

Résumé

On a étudié la décomposition thermique des copolymères binaires de l'acrylonitrile avec des quantités variables d'α-méthylstyrène (2–40%), àp=10−2−10−4 torr etT=0–600°. Les produits de décomposition (solides, liquides et gaz) ont été caractérisés par spectroscopie IR et UV, Chromatographie en phase gazeuse, osmométrie sous pression de vapeur et analyse élémentaire. Le méchanisme de décomposition a été établi à partir des résultats obtenus.

Zusammenfassung

Die thermische Zersetzung der binären Kopolymere von Akrylnitril mit verschiedenen Mengen von α-Methylstyrol (2–40%) wurde beip=10−2−10−4 Torr undT=0–600° untersucht. Die Zersetzungsprodukte (Festkörper, Flüssigkeiten und Gase) wurden durch IR- und UV-Spektroskopie, Gaschromatographie, Dampfdruck-Osmometrie und Elementaranalyse charakterisiert. Der Zersetzungsmechanismus wurde an Hand der erhaltenen Ergebnisse bestätigt.

Резюме

Термическое разложе ние бинарных сополим еров акрилонитрила с разл ичным количеством (2–40%) а-мети лстирола было изучен о приp=10−2−10−4 торр иТ=0–600°. Продукты разлом ения (твердые, жидкост и и газы) были охарактеризова ны ИК- и УФ-спектроскопие й, газовой хроматогра фией, газонаполненной осм ометрией и элементарным анализ ом. На основании получ енных результатов выведен механизм разложения.

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Vasile, C., Caşcaval, C.N., Ilie, A. et al. Thermal degradation of random copolymers of acrylonitrile with α-methylstyrene. Journal of Thermal Analysis 15, 141–150 (1979). https://doi.org/10.1007/BF01910205

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