Browsing by Author "Román Concha, Frida Rosario"
Now showing items 1-18 of 18
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A new epoxy-based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development
(2014-03-01)
Article
Open AccessPolymer 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
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-06)
Article
Open AccessFor 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 ... -
Densification: A route towards enhanced thermal conductivity of epoxy composites
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-01)
Article
Open AccessWhen 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
(2017-03-03)
Article
Restricted access - publisher's policyEpoxy 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
(Springer, 2020-05-25)
Article
Open AccessThermally 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
(2018-03-20)
Article
Open AccessAn 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.)
(Universitat Politècnica de Catalunya, 2004-04-13)
Exam
Restricted access to the UPC academic community -
Identification of nanostructural development in epoxy polymer layered silicate nanocomposites from the interpretation of differential scanning calorimetry and dielectric spectroscopy
(2012-05-08)
Article
Open AccessThe 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
(2013-12-20)
Article
Restricted access - publisher's policyThe 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
(2016-03-01)
Article
Open AccessThe 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
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-03)
Article
Open AccessThis 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
(2018-03-09)
Article
Open AccessTwo 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
(2017-02-04)
Article
Open AccessMultiarm 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.)
(Universitat Politècnica de Catalunya, 2004-04-16)
Exam
Restricted access to the UPC academic community -
TECNOLOGIA DELS POLÍMERS (Examen 1r Quadr.)
(Universitat Politècnica de Catalunya, 2005-01-11)
Exam
Restricted access to the UPC academic community -
TECNOLOGIA DELS POLÍMERS (Examen 1r Quadr.)
(Universitat Politècnica de Catalunya, 2004-10-29)
Exam
Restricted access to the UPC academic community -
Termodinàmica : pràctiques de laboratori
(Universitat Politècnica de Catalunya, 2016)
Practice
Open Access -
Thermal and oxidative degradation of epoxy based layered silicate nanocomposites
(2009)
Conference lecture
Restricted access - publisher's policyThe thermal oxidative degradation of several polymer/clay nanocomposites with a range of clay contents has been determined. It is found that the dispersion of the clay in the resin matrix plays a crucial role in the ...
