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Mechanical and macromolecular changes during thermal degradation of polyphenylsulfone

Article dans une revue avec comité de lecture
Author
LEBERT, Nicolas
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
1057027 Laboratoire de Mécanique, Multiphysique, Multiéchelle - UMR 9013 [LaMcube]
GAY, Nicolas
1057027 Laboratoire de Mécanique, Multiphysique, Multiéchelle - UMR 9013 [LaMcube]
1074476 Centrale Lille Institut [CLIL]
RICHAUD, Emmanuel
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/22297
DOI
10.1016/j.polymdegradstab.2021.109812
Date
2022-01
Journal
Polymer Degradation and Stability

Abstract

Polyphenylsulfone was thermally aged at temperatures corresponding to its processing and was mainly shown to undergo crosslinking as observed by measurements of average molar mass, rheometry and changes in glass transition temperature. Those experiments were completed by mechanical testing thin sample films at 250 and 280 °C. The same degradation mechanisms were observed and result in a strong decrease of ultimate strain accompanied by a slight decrease in elastic modulus and yield stress. Overall results were discussed using well know structure-properties relationships.

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