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dc.contributor.authorShiravand, Fatemeh
dc.contributor.authorFraga Rivas, Iria
dc.contributor.authorCortés Izquierdo, María Pilar
dc.contributor.authorCalventus Solé, Yolanda
dc.contributor.authorHutchinson, John M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.date.accessioned2014-12-15T13:49:18Z
dc.date.created2014-11-01
dc.date.issued2014-11-01
dc.identifier.citationShiravand, F. [et al.]. Thermal analysis of polymer layered silicate nanocomposites. Identification of nanostructure development by DSC. "Journal of thermal analysis and calorimetry", 01 Novembre 2014, vol. 118, núm. 2, p. 723-729.
dc.identifier.issn1388-6150
dc.identifier.urihttp://hdl.handle.net/2117/25026
dc.description.abstractIt has been shown, for three different polymer layered silicate (PLS) nanocomposite systems, how differential scanning calorimetry (DSC) can identify the different reactions of homopolymerisation and of crosslinking that occur in the intra- and extra-gallery regions of these nanocomposites, respectively, and hence how DSC can be used to assess the cure conditions for optimising their nanostructure. The PLS nanocomposites are based upon: (i) diglycidyl ether of bisphenol-A (DGEBA) cured with a polyoxypropylene diamine; (ii) DGEBA cured with an -NH2 terminated hyperbranched polymer (HBP); and (iii) tri-glycidyl p-amino phenol (TGAP) cured with a diamine. In each case, the existence of both intra- and extra-gallery reactions in the DSC cure curves, and whether they occur simultaneously or sequentially, and in what order, are identified and correlated with the nanostructure as observed by small angle X-ray scattering and transmission electron microscopy. In particular, it is shown that the intra-gallery reaction must precede the extra-gallery for significant exfoliation to occur. In accordance with this scenario, the TGAP/diamine system displays the greatest degree of exfoliation, the DGEBA/diamine system the least, with the DGEBA/HBP system intermediate. For those systems in which significant exfoliation occurs, the DSC cure curves also allow the optimum cure conditions, such as the isothermal cure temperature, to be determined.
dc.format.extent7 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química física
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos
dc.subject.lcshCalorimetry
dc.subject.lcshEpoxy resins
dc.subject.lcshNanocomposites (Materials)--Research
dc.subject.lcshSilicates
dc.subject.otherDifferential scanning calorimetry (DSC)
dc.subject.otherEpoxy resin
dc.subject.otherCure kinetics
dc.subject.otherNanocomposites
dc.subject.otherExfoliation
dc.subject.otherLayered silicate
dc.subject.otherEPOXY-CLAY NANOCOMPOSITES
dc.subject.otherCURE TEMPERATURE
dc.subject.otherMONTMORILLONITE
dc.subject.otherEXFOLIATION
dc.subject.otherRESIN
dc.subject.otherSTOICHIOMETRY
dc.subject.otherMORPHOLOGY
dc.subject.otherMECHANISM
dc.titleThermal analysis of polymer layered silicate nanocomposites. Identification of nanostructure development by DSC
dc.typeArticle
dc.subject.lemacCalorimetria
dc.subject.lemacResines epoxídiques
dc.subject.lemacNanocompòsits (Materials)
dc.subject.lemacSilicats
dc.contributor.groupUniversitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
dc.identifier.doi10.1007/s10973-014-3709-3
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac15342137
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorShiravand, F.; Fraga, I.; Cortes, M.; Calventus, Y.; Hutchinson, J.M.
local.citation.publicationNameJournal of thermal analysis and calorimetry
local.citation.volume118
local.citation.number2
local.citation.startingPage723
local.citation.endingPage729


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