TG and TGT investigations of the decomposition of nitrocellulose under quasi-isothermal conditions |
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Authors: | F. Paulik J. Paulik M. Arnold |
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Affiliation: | (1) Institute for General and Analytical Chemistry, Technical University Budapest, Hungary |
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Abstract: | A derivatographic study was made of the influence of the slow heat transport between the sample and its surroundings upon the courses of exothermic transformations. It was found that if the sample was placed in a thin film layer on the multiplate sample holder and the quasi-isothermal heating technique was applied, then the rate of the decomposition could already be regulated at will, up to a certain limit. Under the conventional thermoanalytical conditions the same sample decomposed in an explosion-like way. The examinations were supplemented with thermo-gas-titrimetric (TGT) measurements.
Zusammenfassung Die Autoren untersuchten mit dem Derivatographen die Wirkung der langsamen Wärmeübertragung zwischen Probe und Umgebung auf den Verlauf exothermer Umwandlungen. Es wurde festgestellt, daß bei Auftragung der Probe in einer dünnen Filmschicht auf den Mehrplatten-Probenbehälter und bei Anwendung einer quasi-isothermen Aufheiztechnik die Zersetzungsgeschwindigkeit bis zu einer gewissen Grenze bereits nach Belieben gesteuert werden kann. Dieselbe Probe wird unter den üblichen thermoanalytischen Bedingungen explosionsartig zersetzt. Die Autoren ergänzten ihre Prüfungen auch mit thermogas-titrimetrischen (TGT) Messungen.
Résumé Les auteurs ont étudié à l'aide d'unDerivatograph l'influence du transfert de chaleur lent entre l'échantillon et son environnement, sur l'allure des transformations exothermiques. Les résultats montrent que si l'échantillon est placé sous forme de films minces sur le support multiplaques et s'il est chauffé en régime quasi-isotherme, la vitesse de la décomposition peut-être contrôlée, jusqu'à une certaine limite, à volonté. Si l'on applique les conditions habituelles de l'analyse thermique, le même échantillon se décompose de manière explosive. Les auteurs ont complété leurs études en effectuant également l'analyse titrimétrique des gaz émis.
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![ycy](/content/lk58716h2l553848/xxlarge1099.gif) ![chcy](/content/lk58716h2l553848/xxlarge1095.gif) ![ncy](/content/lk58716h2l553848/xxlarge1085.gif) ![ycy](/content/lk58716h2l553848/xxlarge1099.gif) ![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![mcy](/content/lk58716h2l553848/xxlarge1084.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![ncy](/content/lk58716h2l553848/xxlarge1085.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![chcy](/content/lk58716h2l553848/xxlarge1095.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![kcy](/content/lk58716h2l553848/xxlarge1082.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![ucy](/content/lk58716h2l553848/xxlarge1091.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![vcy](/content/lk58716h2l553848/xxlarge1074.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![yacy](/content/lk58716h2l553848/xxlarge1103.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![zcy](/content/lk58716h2l553848/xxlarge1079.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![gcy](/content/lk58716h2l553848/xxlarge1075.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![vcy](/content/lk58716h2l553848/xxlarge1074.gif) ![zcy](/content/lk58716h2l553848/xxlarge1079.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![ycy](/content/lk58716h2l553848/xxlarge1099.gif) ![vcy](/content/lk58716h2l553848/xxlarge1074.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) . ![Acy](/content/lk58716h2l553848/xxlarge1040.gif) ![vcy](/content/lk58716h2l553848/xxlarge1074.gif) ![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![dcy](/content/lk58716h2l553848/xxlarge1076.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![ncy](/content/lk58716h2l553848/xxlarge1085.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![vcy](/content/lk58716h2l553848/xxlarge1074.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![lcy](/content/lk58716h2l553848/xxlarge1083.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![dcy](/content/lk58716h2l553848/xxlarge1076.gif) ![ocy](/content/lk58716h2l553848/xxlarge1086.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![ncy](/content/lk58716h2l553848/xxlarge1085.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![mcy](/content/lk58716h2l553848/xxlarge1084.gif) -![gcy](/content/lk58716h2l553848/xxlarge1075.gif) ![acy](/content/lk58716h2l553848/xxlarge1072.gif) ![zcy](/content/lk58716h2l553848/xxlarge1079.gif) -![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![mcy](/content/lk58716h2l553848/xxlarge1084.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![tcy](/content/lk58716h2l553848/xxlarge1090.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![chcy](/content/lk58716h2l553848/xxlarge1095.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![scy](/content/lk58716h2l553848/xxlarge1089.gif) ![kcy](/content/lk58716h2l553848/xxlarge1082.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![mcy](/content/lk58716h2l553848/xxlarge1084.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![zcy](/content/lk58716h2l553848/xxlarge1079.gif) ![mcy](/content/lk58716h2l553848/xxlarge1084.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![rcy](/content/lk58716h2l553848/xxlarge1088.gif) ![iecy](/content/lk58716h2l553848/xxlarge1077.gif) ![ncy](/content/lk58716h2l553848/xxlarge1085.gif) ![icy](/content/lk58716h2l553848/xxlarge1080.gif) ![yacy](/content/lk58716h2l553848/xxlarge1103.gif) ![mcy](/content/lk58716h2l553848/xxlarge1084.gif) (![Tcy](/content/lk58716h2l553848/xxlarge1058.gif) ![Gcy](/content/lk58716h2l553848/xxlarge1043.gif) ).
The authors wish to thank Prof. E. Pungor for valuable discussions. |
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Keywords: | |
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