Kinetic modelling of phenols consumption during polyethylene thermal oxidation
Article dans une revue avec comité de lecture
Date
2013Journal
European Polymer JournalAbstract
Irganox 1010 stabilized PE was monitored by carbonyl build-up and DSC under oxygen. A scheme for PE stabilization by phenols was implemented and its kinetic parameters were calculated from experimental results. This model was validated from its ability to simulate kinetics curves for carbonyl build up, induction period changes with stabilizer concentration, and stabilizer depletion curve in thermal ageing. The use of OIT measurement for quantifying stabilizer is also discussed. Kinetic analysis showed that OIT is actually proportional to stabilizer concentration in virgin samples but this is not true for aged samples because of negative influence of oxidation unstable by-products. The model was also employed for discussing some scenarii proposed as explanation of heterogeneity observed during thermal oxidation of stabilized polyolefins.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureARAUJO, Steven; SAINLAUD, Chloé; DELPOUVE, Nicolas; RICHAUD, Emmanuel; DELBREILH, Laurent; DARGENT, Eric (Online Library Wiley, 2022-07)The degradation of polylactide (PLA) under UV exposure is investigated in terms of cooperativity and kinetic fragility at the glass transition. In the first part, possibly coexisting degradation mechanisms are evoked from ...
-
Communication avec acteThis paper deals with the thermal ageing of ELIUM® based composites filled with mineral fillers (aluminium trihydrate in particular) and corresponding matrices. The ageing of thin films and thick blocks was investigated ...
-
Article dans une revue avec comité de lectureDELANNOY, Romain; QUELENNEC, Blandine; TOGNETTI, Vincent; DELBREILH, Laurent; DELPOUVE, Nicolas; RICHAUD, Emmanuel (2023)Four epoxy-amine networks were characterized by Dynamical Mechanical Analysis (DMA) and by Dielectric Relaxation Spectroscopy (DRS). The epoxy-amine networks were cured with DGEBA and four aliphatic amine hardeners: three ...
-
Article dans une revue avec comité de lectureThis paper presents the study of the thermal degradation of methyl methacrylate resin based materials known as ELIUM® resin. Samples under investigation were made from MMA based resin (ELIUM® V1), ELIUM® V1 with a ...
-
Article dans une revue avec comité de lectureDELOZANNE, Justine; MONTANA, Juan Sebastian; GUINAULT, Alain; DESGARDIN, Nancy; CUVILLIER, Nicolas; RICHAUD, Emmanuel (Taylor & Francis, 2022-04)This paper reports the failure of bonded assemblies submitted to thermal ageing. Adhesives are either fully or incompletely cured. Despite comparable initial properties, depletion of mechanical properties (evaluated from ...