Clarification and discussion of chemical transformations involved in thermal and photo-oxidative degradation of ABS

✍ Scribed by J.B. Adeniyi

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 461 KB
• Volume: 20
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(84)90050-8

✦ Synopsis

Abs~'act--The mechanisms of thermal and photo-oxidative degradation of unstabilized samples of ABS have been discussed in terms of the known chemistry of the unsaturated isomeric units of PB and the chemical species identified by either i.r. spectroscopy or chemical studies. The reactions which lead to the loss of unsaturation and loss of elastomeric properties of the rubber segment, production of hydroxyl and carbonyl species and the development of cross-linking and colour are extremely complex. High degree of correlation between the outlined chemical transformations and the identifiable reaction products has led to a more definitive and clearer mechanism of degradation of ABS, and by inference, PB and PB-based polyblends.