Thermal decomposition of acrylic-SO2 copolymers

The oxidative thermal degradation of acrylic–SO2 copolymers was investigated by TG, DTG, and DTA. Their thermograms show that the copolymers decompose in several reaction stages with different weight loss, accompanied by several exo‐ and endothermic effects. Acrylonitrile–SO2 and methacrylate–SO2 co...

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Bibliographic Details
Published in:Journal of applied polymer science 1993-08, Vol.49 (7), p.1233-1239
Main Author: Tsonis, C. P.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical reactions and properties
Degradation
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
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Summary:The oxidative thermal degradation of acrylic–SO2 copolymers was investigated by TG, DTG, and DTA. Their thermograms show that the copolymers decompose in several reaction stages with different weight loss, accompanied by several exo‐ and endothermic effects. Acrylonitrile–SO2 and methacrylate–SO2 copolymers exhibit a two‐stage thermal decomposition, whereas the polysulfones of the acrolein–SO2 and acrylamide–SO2 systems decompose in four stages. Both the number of SO2 units present in the copolymer and the polarity of the pendant group on the organic monomer have some effect on the thermal stability and the glass transition temperature of the polymers. © 1993 John Wiley & Sons, Inc.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1993.070490712