Influence of External Conditions on the Relation between the Physical and Chemical Processes in the Thermodegradation of Plasticized Poly(Vinyl Chloride)

The heat-induced loss of plasticizer from and dehydrochlorination of poly(vinyl chloride) plasticized with dioctyl phthalate is studied by thermogravimetric analysis, IR spectroscopy, and colorimetry. Specific features and general regularities of the processes at high (200–320°C) and medium (100–132...

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Bibliographic Details
Published in:Russian journal of physical chemistry. B 2017-11, Vol.11 (6), p.978-984
Main Authors: Ivanov, V. B., Solina, E. V., Staroverova, O. V., Popova, E. I., Lazareva, O. L., Belova, O. A.
Format: Article
Language:English
Subjects:
Chemical industry
Chemical Physics of Polymer Materials
Chemistry
Chemistry and Materials Science
Colorimetry
Confined spaces
Dehydrochlorination
Dioctyl phthalate
Infrared spectroscopy
Oxidation
Physical Chemistry
Polyvinyl chloride
Thermogravimetric analysis
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Summary:The heat-induced loss of plasticizer from and dehydrochlorination of poly(vinyl chloride) plasticized with dioctyl phthalate is studied by thermogravimetric analysis, IR spectroscopy, and colorimetry. Specific features and general regularities of the processes at high (200–320°C) and medium (100–132°C) temperatures are established. It is shown that the dehydrochlorination and oxidation processes dominate in confined space whereas, in unconfined space, plasticizer is lost largely through evaporation. The activation energies of the initial stages of the processes are determined.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793117060033