Direct relationships between volume variations at macro and nanoscale in epoxy systems. PALS/PVT measurements

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dc.conicet.fuenteunificacion
dc.conicet.organizacionConsejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires
dc.conicet.organizacionIfimat-uncentro Comn. Invest. C.
dc.conicet.organizacionIfimat-uncentro Comn. Invest. C.
dc.conicet.organizacionEscuela Universitaria Politécnica
dc.conicet.organizacionEscuela Universitaria Politécnica
dc.conicet.paisOrganizacionArgentina
dc.conicet.paisOrganizacionArgentina
dc.conicet.paisOrganizacionArgentina
dc.conicet.paisOrganizacion
dc.conicet.paisOrganizacion
dc.conicet.produccionid6534913
dc.contributor.authorGoyanes, Silvia Nair
dc.contributor.authorSalgueiro, Walter Alberto
dc.contributor.authorSomoza, A.
dc.contributor.authorRamos, J.A.
dc.contributor.authorMondragon, I.
dc.date.accessioned2019-04-08T16:20:16Z
dc.date.available2019-04-08T16:20:16Z
dc.date.issued2004-12
dc.date.updated2019-04-05T18:27:13Z
dc.description.abstractThe free volume in epoxy systems fully cured with aminic hardeners having different chemical structures was studied by means of positron annihilation lifetimes spectroscopy. The results are compared with those obtained from the analysis of the macroscopic specific volume changes by using pressure-volume-temperature experimental technique. An excellent correlation between the volumes measured at macro and nanoscales was found. From this fact, it can be asserted that the variation of the specific volume is mainly controlled by the variation in the average size of sub-nanometer size local free volumes, which are fixed by the chemical structure of hardener in fully crosslinked epoxy networks. These results give the first evidence of the direct relation existing between macro and nanoscales in thermosetting networks. © 2004 Elsevier Ltd. All rights reserved.es
dc.description.filFil: Goyanes, Silvia Nair. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
dc.description.filFil: Salgueiro, Walter Alberto. Ifimat-uncentro Comn. Invest. C.; Argentina
dc.description.filFil: Somoza, A.. Ifimat-uncentro Comn. Invest. C.; Argentina
dc.description.filFil: Ramos, J.A.. Escuela Universitaria Politécnica;
dc.description.filFil: Mondragon, I.. Escuela Universitaria Politécnica;
dc.formatapplication/pdfes
dc.identifier.citationGoyanes, Silvia Nair; Salgueiro, Walter Alberto; Somoza, A.; Ramos, J.A.; Mondragon, I.; Direct relationships between volume variations at macro and nanoscale in epoxy systems. PALS/PVT measurements; Elsevier; Polymer; 45; 19; 12-2004; 6691-6697es
dc.identifier.institucionalCONICET
dc.identifier.issn0032-3861es
dc.identifier.repoCONICET Digital
dc.identifier.urihttp://hdl.handle.net/11336/73396
dc.journal.ciudadAmsterdames
dc.journal.number19es
dc.journal.pagination6691-6697es
dc.journal.paisPaíses Bajoses
dc.journal.titlePolymeres
dc.journal.volume45es
dc.language.isoenges
dc.publisherElsevieres
dc.relation.alternativeidinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.polymer.2004.07.057
dc.rightsinfo:eu-repo/semantics/openAccess*
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/*
dc.subjectChemical Structurees
dc.subjectEpoxyes
dc.subjectHardeneres
dc.subject.classificationAstronomíaes
dc.subject.classificationCiencias Físicases
dc.subject.classificationCIENCIAS NATURALES Y EXACTASes
dc.titleDirect relationships between volume variations at macro and nanoscale in epoxy systems. PALS/PVT measurementses
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion

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