Thermal Breakdown by the Retro Diels–Alder Reaction of Crosslinking in Poly[styrene-co-(furfuryl methacrylate)]
✍ Scribed by Eunate Goiti; Malcolm B. Huglin; José M. Rego
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 82 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Crosslinked poly[styrene‐co‐(furfuryl methacrylate)] has been produced by the Diels–Alder (D‐A) reaction between the furan ring (within the copolymer) and the maleimide (MI) group (within the other reactant, bismaleimide). The retro D‐A reaction was followed by the analysis of MI groups produced at different times at five constant temperatures. The process was shown to follow first‐order kinetics, and the rate constants were determined. The findings are believed to be the first to provide quantitative information on the breakdown by a retro D‐A reaction of crosslinking in a polymer system. The D‐A and retro D‐A processes constitute a thermoreversible gelling system with respect to the formation and breakdown of crosslinks.
First‐order rate plot for the retro D‐A breakdown of crosslinked poly(ST‐co‐FM).
magnified imageFirst‐order rate plot for the retro D‐A breakdown of crosslinked poly(ST‐co‐FM).