Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence

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Show simple item record Antonelli, Claire Serrano Prieto, Berna Baselga Llidó, Juan Ozisik, Rahmi Cabanelas Valcárcel, Juan Carlos 2017-11-29T11:59:51Z 2017-11-29T11:59:51Z 2015-01
dc.identifier.bibliographicCitation Antonelli, C., Serrano, B., Baselga, J., Ozisik, R. & Cabanelas, J. C. (2015). Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence. European Polymer Journal, 62, pp. 31-42.
dc.identifier.issn 0014-3057
dc.description Artículo publicado en papel: enero 2015 pero disponible online desde 10 noviembre 2014.
dc.description.abstract Fluorescence labeling was used as a tool for the interfacial characterization of nanocomposites. The solvatochromic probe dansyl chloride was employed as interfacial reporter in epoxy/silica nanocomposites. Molecular spacers (organosiloxanes and polyetheramines) of different lengths were used to vary the location of the chromophore at the interface. The steady state and time resolved fluorescent responses reflect a rigid polar interface. Fluorescence changes during heating at a constant rate were analyzed for determining the local glass transition (Tg) at the interface region. The fluorescence results were then compared to the Tg obtained from differential scanning calorimetry and the results showed the existence of a gradient interface of a few nanometers thick having different properties than the bulk matrix. The thickness of this interface is small but its altered dynamics due to strong interactions with the nanofiller spreads its influence throughout the whole matrix.
dc.description.sponsorship J.C. Cabanelas, C. Antonelli, J. Baselga and B. Serrano gratefully acknowledge Spanish Ministerio de Educación, Cultura y Deporte (MAT2010-17091) for financial support. R. Ozisik acknowledges support from the United States National Science Foundation under Grant No. 1200270.
dc.format.extent 10
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © Elsevier, 2014
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Interface
dc.subject.other Polymer nanocomposites
dc.subject.other Epoxy
dc.subject.other Fluorescence
dc.subject.other Glass
dc.subject.other glass-transition temperature
dc.subject.other Ultrathin polymer-films
dc.subject.other Mechanical-properties
dc.subject.other Silica nanoparticles
dc.subject.other Epoxy nanocomposites
dc.subject.other Immobilized polymer
dc.subject.other Segmental dynamics;
dc.subject.other Thin-films
dc.subject.other Surface
dc.subject.other Dansyl
dc.title Interfacial characterization of epoxy/silica nanocomposites measured by fluorescence
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT2010-17091
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 31
dc.identifier.publicationlastpage 42
dc.identifier.publicationtitle European Polymer Journal
dc.identifier.publicationvolume 62
dc.identifier.uxxi AR/0000016350
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