Exploració per autor "Hutchinson, John M."
Ara es mostren els items 1-20 de 34
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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 ... -
A novel comparative study of different layered silicate clay types on exfoliation process and final nanostructure of trifunctional epoxy nanocomposites
Shiravand, Fatemeh; Hutchinson, John M.; Calventus Solé, Yolanda (2016-12)
Article
Accés obertThe effect of three different organically modified layered silicate clays (Nanomer I.30E, Cloisite 30B and Nanofil SE 3000) on the exfoliation process and on the thermal properties and nanostructure of cured trifunctional ... -
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 ... -
Comparative results between three protocols for achieving highly exfoliated epoxy-clay nanocomposites
Hutchinson, John M.; Shiravand, Fatemeh; Calventus Solé, Yolanda; Ferrando Piera, Francesc (2013)
Text en actes de congrés
Accés restringit per política de l'editorial -
Comparison of the nanostructure and mechanical performance of highly exfoliated epoxy-clay nanocomposites prepared by three different protocols
Shiravand, Fatemeh; Hutchinson, John M.; Calventus Solé, Yolanda; Ferrando Piera, Francesc (2014-05-30)
Article
Accés obertThree different protocols for the preparation of polymer layered silicate nanocomposites based upon a tri-functional epoxy resin, triglycidyl para-amino phenol (TGAP), have been compared in respect of the cure kinetics, ... -
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 ... -
Determination of the glass transition temperature: methods correlation and structural heterogeneity
Hutchinson, John M. (2009-12)
Article
Accés restringit per política de l'editorialThe definition of the glass transition temperature, Tg, is recalled and its experimental determination by various techniques is reviewed. The diversity of values of Tg obtained by the different methods is discussed, with ... -
Elastomeric epoxy nanocomposites: Nanostructure and properties
Lipinska, Magdalena; Hutchinson, John M. (2012-03-08)
Article
Accés restringit per política de l'editorialIn polymer layered silicate nanocomposites, significant differences have been reported between the effects of the nano-reinforcement on rigid and elastomeric nanocomposites. In this paper, we have studied elastomeric ... -
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 ... -
Highly exfoliated nanostructure in trifunctional epoxy/clay nanocomposites using boron trifluoride as initiator
Hutchinson, John M.; Shiravand, Fatemeh; Calventus Solé, Yolanda; Fernández Francos, Xavier; Ramis Juan, Xavier (Wiley, 2014-03-15)
Article
Accés obertEpoxy/clay nanocomposites based upon a trifunctional epoxy resin, triglycidyl p-amino phenol (TGAP), have been prepared by intercalating an initiator of cationic homopolymerization, a boron trifluoride monoethylamine ... -
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 ... -
Influence of the isothermal cure temperature on the nanostructure and thermal properties of an epoxy layered silicate nanocomposite
Shiravand, Fatemeh; Hutchinson, John M.; Calventus Solé, Yolanda (2013-03-08)
Article
Accés restringit per política de l'editorialThe cure kinetics of triglycidyl p-amino phenol (TGAP) epoxy resin with a diamine (4,4-diamino diphenyl sulphone [DDS]), reinforced with montmorillonite (MMT), has been studied by differential scanning calorimetry. The ... -
Intra- and extra-gallery reactions in tri-functional epoxy polymer layered silicate nanocomposites
Hutchinson, John M.; Shiravand, Fatemeh; Calventus Solé, Yolanda (2012-09-05)
Article
Accés restringit per política de l'editorialAchieving a high degree of exfoliation in epoxy-based polymer layered silicate (PLS) nanocomposites is crucial to their successful industrial application, but has hitherto proved elusive. In this work, a system is presented ... -
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 ... -
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 ... -
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 ... -
Non-isothermal cure and exfoliation of tri-functional epoxy-clay nanocomposites
Shiravand, Fatemeh; Hutchinson, John M.; Calventus Solé, Yolanda (Budapest University of Technology and Economics, 2015)
Article
Accés obertThe non-isothermal cure kinetics of polymer silicate layered nanocomposites based on a tri-functional epoxy resin has been investigated by differential scanning calorimetry. From an analysis of the kinetics as a function ...