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dc.contributor.authorMILLE, Marion
dc.contributor.author
 hal.structure.identifier
FAYOLLE, Bruno
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
dc.contributor.authorCOLIN, Xavier
dc.contributor.author
 hal.structure.identifier
TEREKHINA, Svetlana
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
dc.date.accessioned2014
dc.date.available2014
dc.date.issued2013
dc.date.submitted2014
dc.identifier.issn0959-8103
dc.identifier.urihttp://hdl.handle.net/10985/8226
dc.description.abstractThe thermal ageing of a neat epoxy matrix has been studied at 200°C in air by three complementary analytical techniques: optical microscopy, mechanical spectrometry and nano-indentation. Thermal oxidation is restricted in a superficial layer of about 195 µm of maximal thickness. It consists in a predominant chain scission process involving, in particular, chemical groups whose β motions have the highest degree of cooperativity and thus, are responsible for the high temperature side of β dissipation band. As a result, chain scissions decrease catastrophically the glass transition temperature, but also increase significantly the storage modulus at glassy plateau between Tβ and Tα. This phenomenon is called “internal antiplasticization”. Starting from these observations, the Di Marzio and Gilbert’s theories have been used in order to establish relationships between the glass transition temperature and number of chain scissions, and between the storage modulus and β transition activity respectively. The challenge is now to establish a relationship between the transition activity and the concentration of the corresponding chemical groups
dc.language.isoen
dc.publisherWiley
dc.rightsPost-print
dc.subjectneat epoxy matrix
dc.subjectthermal ageing
dc.subjectchain scissions
dc.subjectglass transition temperature
dc.subjectYoung’s modulus
dc.subjectinternal antiplasticization
dc.titleOxidation induced changes in viscoelastic properties of a thermostable epoxy matrix
dc.identifier.doi10.1134/S0965545X13090058
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Angers
dc.localisationCentre de Paris
dc.subject.halChimie: Polymères
dc.subject.halSciences de l'ingénieur: Matériaux
dc.subject.halSciences de l'ingénieur: Mécanique
ensam.audienceInternationale
ensam.page614-624
ensam.journalPolymer International
ensam.volume55
hal.identifierhal-01001693
hal.version1
hal.statusaccept
dc.identifier.eissn1097-0126


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