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Kinetic modelling of phenols consumption during polyethylene thermal oxidation

Article dans une revue avec comité de lecture
Auteur
ccRICHAUD, Emmanuel
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/7295
DOI
10.1016/j.eurpolymj.2013.04.027
Date
2013
Journal
European Polymer Journal

Résumé

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.

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  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Polypropylene stabilization by hindered phenols – Kinetic aspects 
    Article dans une revue avec comité de lecture
    VERDU, Jacques; ccFAYOLLE, Bruno; ccRICHAUD, Emmanuel (Elsevier, 2011)
    This article deals with polypropylene stabilization by hindered 2,6-di-tert-butylphenols. Two aspects are mainly considered: the influence of stabilizer structure, of its concentration and temperature on induction period ...
  • Comparison of stabilization by Vitamin E and 2,6-di-tert-butylphenols during polyethylene radio-thermal-oxidation 
    Article dans une revue avec comité de lecture
    ccRICHAUD, Emmanuel (Elsevier, 2014)
    This paper reports a compilation of data for PE+Vitamin E and 2,6-di-tert-butylphenols oxidation in radio-thermal ageing. Data unambiguously show that Vitamin E reacts with P° and POO° whereas 2,6-di-tert-butyl phenols ...
  • Tensile properties of polyproylene fibres 
    Chapitre d'ouvrage scientifique
    VERDU, Jacques; ccFAYOLLE, Bruno; ccRICHAUD, Emmanuel (Woodhead Publishing Series - Elsevier, 2009)
    As soon as it appeared on the market, one half century ago, polypropylene (PP) appeared as a promising fibre-forming polymer but with some difficulties in processing due to a lack of control of its viscoelastic properties ...
  • Thermooxidative aging of polydicyclopentadiene in glassy state 
    Article dans une revue avec comité de lecture
    LE GAC, Pierre Yves; VERDU, Jacques; LE GAC, Pierre Yves; ccRICHAUD, Emmanuel (Elsevier, 2014)
    Thermal aging of thin films of unstabilized polydicyclopentadiene (pDCPD) at several temperatures ranging from 120 to 30 C was investigated by means of carbonyl build up by FTIR with ammonia derivatization, double bond ...
  • Co-oxidation kinetic model for the thermal oxidation of polyethylene-unsaturated substrate systems 
    Article dans une revue avec comité de lecture
    VERDU, Jacques; RYCHLÝ, Jozef; ccFAYOLLE, Bruno; ccRICHAUD, Emmanuel (Elsevier, 2013)
    The thermal oxidation of polyethylene (PE) impregnated by the methyl esters of unsaturated fatty acids (UFEs) was studied using chemiluminescence, and infra-red spectrophotometry. It was shown that the presence of UFEs ...

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