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| Bardin, Antoine; Le Gac, Pierre Yves; Cérantola, Stéphane; Simon, Gaelle; Bindi, Hervé; Fayolle, B.. |
| A hydrolytic kinetic model predicting chains scissions of a polyurethane elastomer (TPU) containing an anti-hydrolysis agent (stabilization via carbodiimide) was developed. This model is based on four components: uncatalysed hydrolysis, acid-catalysed hydrolysis, carboxylic acid dissociation and competitive carbodiimide-based deactivation of acid. Protons were considered as the key catalyst responsible for the hydrolysis. Model parameters were determined by fitting experimental data measured on unstabilized and stabilized TPUs, aged in immersion from 40 to 90 °C. Scission kinetics were predicted for immersion and 50% relative humidity conditions, from 10 to 100 °C. Structure-failure property relationships were also investigated, between molar mass and... |
| Tipo: Text |
Palavras-chave: Thermoplastic elastomer; Hydrolysis; Kinetic model; Structure-property relationships. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00588/70044/67978.pdf |
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