Exploració per autor "Fraga Rivas, Iria"
Ara es mostren els items 1-10 de 10
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A new epoxy based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development
Cortés Izquierdo, María Pilar; Fraga Rivas, Iria; Calventus Solé, Yolanda; Hutchinson, John M. (2013)
Comunicació de congrés
Accés restringit per política de l'editorialPolymer layered silicate (PLS) nanocomposites based on epoxy resins have been widely studied previously [1], but the anticipated dramatic enhancement of their properties has not yet been realised. One approach to overcoming ... -
A new epoxy-based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development
Cortés Izquierdo, María Pilar; Fraga Rivas, Iria; Calventus Solé, Yolanda; Román Concha, Frida Rosario; Hutchinson, John M.; Ferrando Piera, Francesc (2014-03-01)
Article
Accés obertPolymer layered silicate (PLS) nanocomposites have been prepared with diglycidyl ether of bisphenol-A (DGEBA) epoxy resin as the matrix and organically modified montmorillonite (MMT) as the clay nanofiller. Resin-clay ... -
Isothermal and non-isothermal cure of a tri-functional epoxy resin (TGAP): a stochastic TMDSC study
Hutchinson, John M.; Shiravand, Fatemeh; Calventus Solé, Yolanda; Fraga Rivas, Iria (2012-02-10)
Article
Accés restringit per política de l'editorialThe isothermal cure of a highly reactive tri-functional epoxy resin, tri-glycidyl para-amino phenol (TGAP), with diamino diphenyl sulphone (DDS), at two different cure temperatures Tc has been studied by both conventional ... -
Mathematics education in engineering: a triple discontinuity?
Florensa Ferrando, Ignasi; Fraga Rivas, Iria; Martínez Junza, Víctor (Universitat Politècnica de Catalunya, 2022-09)
Text en actes de congrés
Accés obertThis paper focuses on the study of discontinuities in the teaching of mathematics in engineering within the framework of the anthropological theory of didactics (ATD) and, in particular, attempts to characterize the internal ... -
Study of thermal transitions in polymers by a multifrequency modulated DSC technique
Fraga Rivas, Iria (Universitat Politècnica de Catalunya, 2010-02-26)
Tesi
Accés obertDifferential Scanning Calorimetry (DSC) is one of the most widely used thermal analysis techniques for the study of transitions and relaxation processes in polymers and also in other materials. It measures the heat flow ... -
The Use of Matlab in the study of the glass transition and vitrification in polymers
Hutchinson, John M.; Fraga Rivas, Iria (INTECH, 2011-09-01)
Capítol de llibre
Accés obert -
Thermal analysis of polymer layered silicate nanocomposites. Identification of nanostructure development by DSC
Shiravand, Fatemeh; Fraga Rivas, Iria; Cortés Izquierdo, María Pilar; Calventus Solé, Yolanda; Hutchinson, John M. (2014-11-01)
Article
Accés restringit per política de l'editorialIt 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 ... -
TOPEM, a new temperature modulated DSC technique - Application to the glass transition of polymers
Fraga Rivas, Iria; Montserrat Ribas, Salvador; Hutchinson, John M. (2007-01-30)
Article
Accés restringit per política de l'editorialTOPEM is a new temperature modulated DSC technique, introduced by Mettler-Toledo in late 2005, in which stochastic temperature modulations are superimposed on the underlying rate of a conventional DSC scan. These modulations ... -
Vitrification and devitrification during the non-isothermal cure of a thermoset. A TOPEM Study
Fraga Rivas, Iria; Hutchinson, John M.; Montserrat Ribas, Salvador (2010-03)
Article
Accés restringit per política de l'editorialThe processes of vitrification and devitrification that occur in an epoxy resin when it cures nonisothermally with a hardener are studied in terms of their frequency dependence and as a function of the heating rate. A ... -
Vitrification during the Isothermal Cure of Thermosets: Comparison of Theoretical Simulations with Temperature-Modulated DSC and Dielectric Analysis
Fraga Rivas, Iria; Montserrat Ribas, Salvador; Hutchinson, John M. (2008-10)
Article
Accés obertVitrification during the isothermal cure of a thermoset, which is monitored by dynamic techniques such as temperature-modulated differential scanning calorimetry (TMDSC) or dielectric analysis (DEA), is analyzed in terms ...