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Journal Articles Polymer Degradation and Stability Year : 2020

Thermal stabilization of polyamide 11 by phenolic antioxidants

Abstract

This paper addresses the effect of hindered phenols (mainly Irganox 1098 with a few comparisons with other phenolic antioxidants) on the stabilization of polyamide 11 aged at several temperatures (90–165 °C). The effect of several phenol concentrations (up to about 0.4%) on kinetic curves for imide build-up, yellowing, and molar mass changes (in association with embrittlement) was investigated. Phenols significantly contribute to yellowing, even at low imide concentrations. When they are used at high concentrations, a post-polycondensation reaction becomes predominant at earlier exposure times, thus increasing molar mass and significantly delaying embrittlement.
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Dates and versions

hal-02890436 , version 1 (06-07-2020)

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Octavie Okamba-Diogo, François Fernagut, Jean Guilment, Frederique Pery, Bruno Fayolle, et al.. Thermal stabilization of polyamide 11 by phenolic antioxidants. Polymer Degradation and Stability, 2020, 179, pp.1-8. ⟨10.1016/j.polymdegradstab.2020.109206⟩. ⟨hal-02890436⟩
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