Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5202428 | Polymer Degradation and Stability | 2013 | 15 Pages |
Abstract
A non-empirical kinetic model has been derived from the oxidation mechanistic scheme previously established for PE, but improved by adding elementary reactions specific to polyamides such as the rapid decomposition of unstable hydroxylated amide groups. This model describes satisfyingly the main features of the thermal oxidation kinetics of PA 6-6, but also of other types of aliphatic polyamides studied previously in the literature such as: PA 6, PA 12 and PA 4-6, as long as it is not controlled by oxygen diffusion. At the same time, it confirms the existence of an universal character for the thermal oxidation kinetics of aliphatic polyamides whatever their origin, i.e. their initial molar mass, crystallinity ratio, concentration of impurities, structural irregularities, etc.
Related Topics
Physical Sciences and Engineering
Chemistry
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Authors
C. El-Mazry, M. Ben Hassine, O. Correc, X. Colin,