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On thermal crystallization in cellulose triacetate films

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Abstract

Thermomechanical analysis by extension under static and periodic impulse loads as well as the plotting of isometric heating diagrams are used for the investigation of thermally stimulated crystallization of cellulose triacetate (CTA) in unplasticized and plasticized films, the latter being known as the film base of photo and cinema materials. By introducing appropriate additives, it appeared possible to affect the crystallization process in various directions; the mechanism'of the process is discussed. The curves obtained by the techniques of thermal analysis give an individual characteristic of CTA film, reflecting the peculiarities of its production.

Zusammenfassung

Zur Untersuchung der thermisch stimulierten Kristallisierung von Cellulose-triacetat (CTA) in unplastifizierten und plastifizierten (letztere bekannt als Filmgrundlage für Foto- und Kinomaterial) Filmen wurden thermomechanische Analyse durch Ausdehnung unter statischen und periodisch-impulsförmigen Belastungen sowie die Aufnahme von isometrischen Aufheizdiagrammen verwendet. Durch Einbringung entsprechender Zusatzstoffe erschien es möglich, den Kristallisationsprozeß in verschiedenen Richtungen zu beeinflussen; der Mechanismus dieses Vorganges wird besprochen. Die bei den verschiedenen Thermoanalysetechniken erhaltenen Diagramme stellen eine individuelle Charakteristik der CTA-Filme dar, in der sich die Besonderheiten ihrer Produktion wiederspiegeln.

Резюме

Термомеханический а нализ при растяжении под действием как статич еской, так и периодической импул ьсной нагрузок, а такж е построение диаграмм изометрического наг рева, использованы для исс ледования термостим улированной кристаллизации триа цетата целлюлозы (ТАЦ) в плёнках — неплас тифицированной и пластифицированных — известных в качестве плёночной о сновы кинофотоматер иалов. Показана возможност ь разносторонних влияний на кристалли зационный процесс пу тём введения подходящих добавок; о бсуждается механизм процесса. Кр ивые, полученные использованными мет одами термического а нализа, дают индивидуальную характеристику ТАЦ-п лёнок, отражающую особенно сти её производства.

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Authors and Affiliations

  1. A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Branch Academy of Sciences, USSR

    B. Ya. Teitelbaum, T. A. Yagfarova, D. S. Pavlova, A. M. Grabko, A. Sh. Nuriazdanov, I. A. Fedorina & G. P. Krupnov

  2. Kazan Research Institute of Cinema and Photo Industry, USSR

    B. Ya. Teitelbaum, T. A. Yagfarova, D. S. Pavlova, A. M. Grabko, A. Sh. Nuriazdanov, I. A. Fedorina & G. P. Krupnov

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  1. B. Ya. Teitelbaum
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  2. T. A. Yagfarova
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  3. D. S. Pavlova
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  4. A. M. Grabko
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  5. A. Sh. Nuriazdanov
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  6. I. A. Fedorina
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  7. G. P. Krupnov
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Teitelbaum, B.Y., Yagfarova, T.A., Pavlova, D.S. et al. On thermal crystallization in cellulose triacetate films. Journal of Thermal Analysis 35, 1709–1717 (1989). https://doi.org/10.1007/BF01912945

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  • DOI: https://doi.org/10.1007/BF01912945

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