Physico-chemical approach of polymer chemical ageing: a short review
Article dans une revue avec comité de lecture
Auteur
RICHAUD, EmmanuelRésumé
Polymers are known to degrade in their use conditions, with the risk that their properties reach unacceptable level. This paper reviews the modeling of modifications occurring at molecular and architectural changes occurring during their chemical ageing, with the aim of predicting the physical (mechanical) properties, all values being linked by structure properties relationships
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Article dans une revue avec comité de lecture; ; ; ;FAYOLLE, Bruno; RICHAUD, Emmanuel (Elsevier, 2014)
The present article reports a study of thermal oxidation of unstabilized polyamide 11 films at several temperatures (90–165 °C) under atmospheric pressure and under various oxygen pressures (up to 1.6 MPa) at 110 °C. The ...
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Article dans une revue avec comité de lecture; ;COLIN, Xavier; RICHAUD, Emmanuel (Elsevier, 2015)
A general kinetic model for the photothermal oxidation of polypropylene has been derived from the basic auto-oxidation mechanistic scheme in which the main sources of radicals are the thermolysis and photolysis of the most ...
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Article dans une revue avec comité de lecture; ;RICHAUD, Emmanuel (Elsevier, 2014)
A statistical theory was proposed for the degradation (random scission of chains) of a network having f-functional nodes in the case where all chains contain equireactive groups and a chain scission event does not create ...
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Article dans une revue avec comité de lecture; ; ;RICHAUD, Emmanuel (Wiley-VCH Verlag, 2014)
The hydrolysis of almost ideal networks based on macrodiols of average molar mass about 2 kg mol 1, with L¼18 ester groups per chain is studied. Tensile testing is used to evaluate the crosslink density through the statistical ...
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Article dans une revue avec comité de lecture; ; ; ;FAYOLLE, Bruno; RICHAUD, Emmanuel (Elsevier, 2015)
The oxidation kinetics of unstabilized polyamide 11 thin film under oxygen pressures up to 2.0 MPa was studied by means of ferrous ion method for hydroperoxides titration, size exclusion chromatography (SEC) for molar weight ...