Exploració per autor "Román Concha, Frida Rosario"
Ara es mostren els items 1-20 de 21
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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; 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 ... -
Achieving high thermal conductivity in epoxy composites: Effect of boron nitride particle size and matrix-filler interface
Moradi, Sasan; Calventus Solé, Yolanda; Román Concha, Frida Rosario; Hutchinson, John M. (Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-06)
Article
Accés obertFor the thermal management of high watt density circuit layers, it is common to use a filled epoxy system to provide an electrically insulating but thermally conducting bond to a metal substrate. An epoxy-thiol system ... -
Critical analysis of the thermal stability of transesterification vitrimers for 3D-printing applications based on digital light processing
Romano, Angelo; Konuray, Ali Osman; Román Concha, Frida Rosario; Calventus Solé, Yolanda; Fernández Francos, Xavier; Roppolo, Ignazio; Sangermano, Marco (2023-11-17)
Article
Accés obert3D-printable vitrimers processed by digital light processing (DLP) have been recently developed, based on the transesterification reaction of ß-hydroxyester structures from mono- and diacrylate monomers employed in the ... -
Densification: A route towards enhanced thermal conductivity of epoxy composites
Moradi, Sasan; Román Concha, Frida Rosario; Calventus Solé, Yolanda; Hutchinson, John M. (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01)
Article
Accés obertWhen an amorphous polymer is cooled under pressure from above its glass transition temperature to room temperature, and then the pressure is released, this results in a densified state of the glass. This procedure applied ... -
Epoxy composites filled with boron nitride and aluminum nitride for improved thermal conductivity
Hutchinson, John M.; Román Concha, Frida Rosario; Cortés Izquierdo, María Pilar; Calventus Solé, Yolanda (2017-03-03)
Article
Accés restringit per política de l'editorialEpoxy composites containing boron nitride (BN) or aluminum nitride (AlN or Al2N3) particles have been studied with a view to obtaining increased thermal conductivity. The effect of these fillers on the cure reaction has ... -
Epoxy composites filled with boron nitride: cure kinetics and the effect of particle shape on the thermal conductivity
Moradi, Sasan; Calventus Solé, Yolanda; Román Concha, Frida Rosario; Hutchinson, John M. (Springer, 2020-05-25)
Article
Accés obertThermally conducting and electrically insulating materials have been prepared by filling an epoxy–thiol system with boron nitride (BN) particles of different shapes (platelets and agglomerates) and sizes (from 2 to 180 ... -
Epoxy-thiol systems filled with boron nitride for high thermal conductivity applications
Hutchinson, John M.; Román Concha, Frida Rosario; Folch, Adrià (2018-03-20)
Article
Accés obertAn epoxy-thiol system filled with boron nitride (BN), in the form of 80 µm agglomerates, has been investigated with a view to achieving enhanced thermal conductivity. The effect of BN content on the cure reaction kinetics ... -
EXPERIMENTACIO EN ENGINYERIA QUIMICA 1 (Examen 2n Quadr.)
Román Concha, Frida Rosario (Universitat Politècnica de Catalunya, 2004-04-13)
Examen
Accés restringit a la comunitat UPC -
Identification of nanostructural development in epoxy polymer layered silicate nanocomposites from the interpretation of differential scanning calorimetry and dielectric spectroscopy
Román Concha, Frida Rosario; Calventus Solé, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M. (2012-05-08)
Article
Accés obertThe effect of nanoclay on the non-isothermal cure kinetics of polymer layered silicate nanocomposites based upon epoxy resin is studied by calorimetric techniques (DSC and TGA) and by dielectric relaxation spectroscopy ... -
Isothermal curing of polymer layered silicate nanocomposites based upon epoxy resin by means of anionic homopolymerisation
Román Concha, Frida Rosario; Calventus Solé, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M. (2013-12-20)
Article
Accés restringit per política de l'editorialThe use of an initiator, 4-(dimethylamino) pyridine (DMAP), to promote an anionic homopolymerisation reaction for the isothermal cure of polymer layered silicate (PLS) nanocomposites based on an epoxy resin, as well as the ... -
Manual de pràctiques de laboratori de Termodinàmica (v1)
Torras Ortiz, Santiago; Ablanque Mejía, Nicolás; Román Concha, Frida Rosario; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Calventus Solé, Yolanda (Universitat Politècnica de Catalunya, 2023)
Exercici de pràctiques
Accés obert -
Molecular mobility in hyperbranched polymers and their interaction with an epoxy matrix
Román Concha, Frida Rosario; Colomer Vilanova, Pere; Calventus Solé, Yolanda; Hutchinson, John M. (2016-03-01)
Article
Accés obertThe molecular mobility related to the glass transition and secondary relaxations in a hyperbranched polyethyleneimine, HBPEI, and its relaxation behaviour when incorporated into an epoxy resin matrix are investigated by ... -
Remarkable Thermal Conductivity of Epoxy Composites Filled with Boron Nitride and Cured under Pressure
Moradi, Sasan; Román Concha, Frida Rosario; Calventus Solé, Yolanda; Hutchinson, John M. (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03)
Article
Accés obertThis work demonstrates that the application of even moderate pressures during cure can result in a remarkable enhancement of the thermal conductivity of composites of epoxy and boron nitride (BN). Two systems have been ... -
Study of hyperbranched poly(ethyleneimine) polymers of different molecular weight and their interaction with epoxy resin
Román Concha, Frida Rosario; Colomer Vilanova, Pere; Calventus Solé, Yolanda; Hutchinson, John M. (2018-03-09)
Article
Accés obertTwo different commercial hyperbranched poly(ethyleneimine)s (HBPEI), with molecular weights (MW) of 800 and 25,000 g/mol, and denoted as PEI800 and PEI25000, respectively, as well as the mixtures with a Diglycidyl Ether ... -
Study of the molecular dynamics of multiarm star polymers with a poly(ethyleneimine) core and poly(lactide) multiarms
Román Concha, Frida Rosario; Colomer Vilanova, Pere; Calventus Solé, Yolanda; Hutchinson, John M. (2017-02-04)
Article
Accés obertMultiarm star polymers, denoted PEIx-PLAy and containing a hyperbranched poly(ethyleneimine) (PEI) core of different molecular weights x and poly(lactide) (PLA) arms with y ratio of lactide repeat units to N links were ... -
TECNOLOGIA DE LA POLIMERITZACIO (Examen 2n Quadr.)
Román Concha, Frida Rosario (Universitat Politècnica de Catalunya, 2004-04-16)
Examen
Accés restringit a la comunitat UPC -
TECNOLOGIA DELS POLÍMERS (Examen 1r Quadr.)
Román Concha, Frida Rosario (Universitat Politècnica de Catalunya, 2004-10-29)
Examen
Accés restringit a la comunitat UPC -
TECNOLOGIA DELS POLÍMERS (Examen 1r Quadr.)
Román Concha, Frida Rosario (Universitat Politècnica de Catalunya, 2005-01-11)
Examen
Accés restringit a la comunitat UPC -
Termodinàmica : pràctiques de laboratori
Colomer, P.; Calventus Solé, Yolanda; Román Concha, Frida Rosario; Hutchinson, John M.; Rigola Serrano, Joaquim; Montserrat, S. (Universitat Politècnica de Catalunya, 2016)
Pràctica
Accés obert -
The surface modification of boron nitride particles
Daneshmehr, Shahla; Román Concha, Frida Rosario; Hutchinson, John M. (Springer, 2019-01-01)
Article
Accés obertThe use of coupling agents to enhance the thermal conductivity of composites of epoxy and boron nitride (BN) has been investigated. Two types of BN particles, lightly aggregated platelets with an average size of 6 µm and ...