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HETEROGENEITY OF THE NETWORK STRUCTURE OF EPOXY POLYMERS STUDIED BY DYNAMIC AND DSC TESTS.

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dc.contributor.author Kontou, E en
dc.contributor.author Spathis, G en
dc.contributor.author Theocaris, PS en
dc.date.accessioned 2014-03-01T01:38:49Z
dc.date.available 2014-03-01T01:38:49Z
dc.date.issued 1985 en
dc.identifier.issn 0449296X en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/22389
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0022061329&partnerID=40&md5=3d34d56cfb675a8d1f6af9dc35520ad5 en
dc.subject.other CALORIMETRY en
dc.subject.other CHEMICAL REACTIONS - Crosslinking en
dc.subject.other MATERIALS TESTING en
dc.subject.other MATHEMATICAL MODELS en
dc.subject.other THERMOANALYSIS en
dc.subject.other DIFFERENTIAL SCANNING CALORIMETRY en
dc.subject.other DYNAMIC TESTS en
dc.subject.other HETEROGENEITY OF NETWORK STRUCTURE en
dc.subject.other EPOXY RESINS en
dc.title HETEROGENEITY OF THE NETWORK STRUCTURE OF EPOXY POLYMERS STUDIED BY DYNAMIC AND DSC TESTS. en
heal.type journalArticle en
heal.publicationDate 1985 en
heal.abstract The final network structure of epoxy polymers cured with a crosslinking agent is strongly connected with the type and amount of the curing agent and conditions. Concerning the morphology of this network, it has been reported that cured epoxies are two-phase systems, containing roughly spherical floccules arranged in a matrix resembling the constituent phases. In this paper and by using an epoxy-polymer cured with different amounts (i. e. , different than the stoichiometric one) of a curing agent, strong indications of their network-structure heterogeneity have been disclosed. For this study, two different experimental techniques, such as dynamic mechanical measurements and DSC tests have been utilized. It was found that cured epoxy-polymers consist of two extreme regions, with low and high crosslink densities, whose volume fractions have been estimated by using a mechanical model applicable for two-phase systems. en
heal.journalName Journal of polymer science. Part A-1, Polymer chemistry en
dc.identifier.volume 23 en
dc.identifier.issue 5 en
dc.identifier.spage 1493 en
dc.identifier.epage 1503 en


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