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Stabilization of irradiated polyethylene by introduction of antioxidants (vitamin E)

Chapitre d'ouvrage scientifique
Auteur
ccRICHAUD, Emmanuel
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/10148
DOI
10.1002/9781118831328.ch3
Date
2015

Résumé

The aim of the present chapter is first to recall the general principles of stabilization. Since vitamin E is particularly adapted in the case of biomaterials, because of its low toxicity, its stabilizing mechanism and performances will be detailed, together with some experimental methods aimed at quantifying residual vitamin E after the complex elaboration process of hip. The existing literature will be reviewed so as to extract the kinetic parameters (rate constants for reactions with radicals, diffusion and solubility coefficients) necessary to perform kinetic modeling for a more complex description of the radio-thermal oxidation of PE + vitamin E. Those data will be compared with data for other common hindered phenols in order to highlight the interest of vitamin E for stabilization of hips. We will also present some practical cases of vitamin E stabilized UHMWPE and some experimental methods to detect and quantity Vitamin E in non-degraded or degraded materials.

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PIMM-Richaud-2015.pdf
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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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