Physico-chemical and mechanical degradation of polyamide 11 induced by hydrolysis and thermal ageing - IFPEN - IFP Energies nouvelles Access content directly
Journal Articles Journal of Applied Polymer Science Year : 2019

Physico-chemical and mechanical degradation of polyamide 11 induced by hydrolysis and thermal ageing

Abstract

This paper deals with the effect of both temperature and water activity on polyamide 11 physico-chemical and mechanical properties. The purpose of this work is to describe the ductile-brittle transition of polyamides during ageing in a wet environment using a mechanical behavior model. For that it is necessary to make physico-chemical analyzes (DSC, FTIR, GPC, viscosity) and mechanical tests (uniaxial tensile test and DMTA). These characterizations were carried out on safe and samples aged until 60 days under hydrothermal conditions in acid water, and under purely thermal conditions in a neutral environment. Changes in mechanical properties with ageing were observed in the polymer and were correlated to morphological changes deduced from the physicochemical characterizations. An increase of the second yield stress related to the recrystallization and a decrease of the strain at break due to the decrease of the molecular weight were observed during ageing.
Fichier principal
Vignette du fichier
Physico-Chemical and Mechanical Degradation.pdf (849.31 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-02180807 , version 1 (11-07-2019)

Identifiers

Cite

S. Maïza, X. Lefebvre, N. Brusselle-Dupend, M.-H. Klopffer, L. Cangémi, et al.. Physico-chemical and mechanical degradation of polyamide 11 induced by hydrolysis and thermal ageing. Journal of Applied Polymer Science, 2019, 136 (23), pp.47628. ⟨10.1002/app.47628⟩. ⟨hal-02180807⟩
104 View
731 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More