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Article Dans Une Revue Polymer Degradation and Stability Année : 2021

Multiscale analysis of thermal degradation of polyamide 6,6 - Influence of temperature on oxygen diffusion-limited oxidation profiles

Résumé

This paper is devoted to the impact of oxygen diffusion on thermal ageing of PA-6,6. Samples were subjected to ageing in air at temperatures ranging from 140°C to 200°C for different times. Depth profiling methods using AFM measurements were developed to characterise the heterogeneity of the thermal and mechanical properties of the oxidised polymer. A comparison of the results obtained with micro-FTIR profiles was performed to correlate the chemical and physical changes induced by oxidation (i.e., from molecular to macroscopic scales). As a result of diffusion-limited oxidation (DLO), it was shown that polymer oxidised much faster at the surface than in the bulk.
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hal-03401853 , version 1 (12-11-2021)

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M. Pliquet, M. Rapeaux, F. Delange, D. Bourgogne, J.L. Gardette, et al.. Multiscale analysis of thermal degradation of polyamide 6,6 - Influence of temperature on oxygen diffusion-limited oxidation profiles. Polymer Degradation and Stability, 2021, 192, pp.109695. ⟨10.1016/j.polymdegradstab.2021.109695⟩. ⟨hal-03401853⟩
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