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  • Study of the exfoliation process in epoxy-clay nanocomposites

     Shiravand, Fatemeh
    Defense's date: 2014-06-03
    Universitat Politècnica de Catalunya
    Theses

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    Resinas epoxi curados son polímeros reticulados altamente que son cada vez más importante en el campo de la ingeniería de alto rendimiento debido a la rigidez, alta resistencia, resistencia al calor y resistencia a los disolventes. Sin embargo, una desventaja importante es su pobre resistencia al impacto ya la iniciación de grietas. En consecuencia, hay una necesidad de mejorar la tenacidad a la vez que mantiene propiedades deseables. Se han sugerido varios enfoques para mejorar la tenacidad incluyendo la adición de silicato arcilla estratificada.El objetivo de esta investigación es desarrollar el proceso de exfoliación de las capas de nanocompuestos - epoxi silicato. Es generalmente se considera que, con el fin de maximizar el grado de exfoliación, la reacción intra - galería, que se asocia a la reacción de homopolimerización epoxi entre galerías de arcilla, debe ocurrir antes de la reacción adicional - galería, que está relacionada con la reacción de reticulación entre los grupos epoxi y aminas, por lo tanto, para la mejora de la velocidad de reacción dentro de la galería, estos se consideraron diferentes posibilidades para mejorar el grado de exfoliación en nanocompuestos curados de la siguiente:1. Seleccionar temperatura de curado adecuado y el programa de curado2. Pre- conditiong la mezcla epoxi / arcilla3. Incorporación del iniciador catiónico en galerías de arcilla4. La adición del polímero hiperramificado de epoxi / mezcla de arcilla5. Seleccione el tipo apropiado de arcilla en capas de silicatoEn apoyo de estas afirmaciones, TGAP (Araldite MY0510) como la resina epoxi trifuncional, montmorillonita (Nanomer I.30E, MMT) como silicato en capas de arcilla y diamino difenil sulfona (Aradur 976-1, DDS) como agente de curado fueron elegidos como experimentales sistema para estudiar la influencia de estas estrategias en la mejora de la nanoestructura definitiva el comportamiento de curado y las propiedades térmicas de silicato de nanocompuestos epoxi en capas que se presenta de acuerdo a la procedimientos anteriores se examinaron por separado con calorimetría diferencial de barrido (DSC y TOPEM) y el análisis termogravimétrico (TGA) y también la nanoestructura completamente curado en cada caso se caracteriza por la transición de electrones microscopía (TEM) y la dispersión de rayos x ( SAXS ) y, además, las propiedades mecánicas son estudiados por dinámico análisis mecánico (DMA), la prueba de impacto y microscopía electrónica de barrido (SEM). Aunque en cada caso se obtuvo la intersección de los resultados que se presentan en nuestros papeles, el verdadero objetivo es fabricar la nanoestructura muy exfoliada que se obtiene a partir de los tres primeros procedimientos.Entre estos tres procedimientos, es difícil decidir cuál es el más eficaz en el proceso de exfoliación a base de las imágenes de TEM que muestra la pequeña parte de la nanoestructura. Por lo tanto, las propiedades mecánicas tales como el módulo, prueba de impacto y la superficie de fractura que muestran el comportamiento de toda la nanoestructura son herramientas útiles para comparar el grado de exfoliación entre estos casos. Como resultados, las propiedades mecánicas mediciones sugirieron que incorporación del iniciador catiónico es el mejor protocolo para alcanzar los nanocompuestos epoxi / arcilla altamente exfoliadas.

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    A new epoxy-based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development  Open access

     Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Calventus Sole, Yolanda; Roman Concha, Frida Rosario; Hutchinson, John M.; Ferrando Piera, Francesc
    Materials
    Date of publication: 2014-03-01
    Journal article

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    Polymer 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 mixtures with different clay contents (zero, two, five and 10 wt%) were cured, both isothermally and non-isothermally, using a poly(ethyleneimine) hyperbranched polymer (HBP), the cure kinetics being monitored by differential scanning calorimetry (DSC). The nanostructure of the cured nanocomposites was characterized by small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM), and their mechanical properties were determined by dynamic mechanical analysis (DMA) and impact testing. The results are compared with an earlier study of the structure and properties of the same DGEBA-MMT system cured with a polyoxypropylene diamine, Jeffamine. There are very few examples of the use of HBP as a curing agent in epoxy PLS nanocomposites; here, it is found to enhance significantly the degree of exfoliation of these nanocomposites compared with those cured with Jeffamine, with a corresponding enhancement in the impact energy for nanocomposites with the low clay content of 2 wt%. These changes are attributed to the different cure kinetics with the HBP, in which the intra-gallery homopolymerization reaction is accelerated, such that it occurs before the bulk cross-linking reaction.

    Polymer 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 mixtures with different clay contents (zero, two, five and 10 wt%) were cured, both isothermally and non-isothermally, using a poly(ethyleneimine) hyperbranched polymer (HBP), the cure kinetics being monitored by differential scanning calorimetry (DSC). The nanostructure of the cured nanocomposites was characterized by small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM), and their mechanical properties were determined by dynamic mechanical analysis (DMA) and impact testing. The results are compared with an earlier study of the structure and properties of the same DGEBA-MMT system cured with a polyoxypropylene diamine, Jeffamine. There are very few examples of the use of HBP as a curing agent in epoxy PLS nanocomposites; here, it is found to enhance significantly the degree of exfoliation of these nanocomposites compared with those cured with Jeffamine, with a corresponding enhancement in the impact energy for nanocomposites with the low clay content of 2 wt%. These changes are attributed to the different cure kinetics with the HBP, in which the intra-gallery homopolymerization reaction is accelerated, such that it occurs before the bulk cross-linking reaction.

  • A new epoxy based layered silicate nanocomposite using a hyperbranched polymer: study of the curing reaction and nanostructure development

     Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Calventus Sole, Yolanda; Hutchinson, John M.
    International Conference on Modification, Degradation and Stabilization of Polymers
    Presentation's date: 2013-09-09
    Presentation of work at congresses

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    Polymer 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 this problem that has recently been investigated is to incorporate hyperbranched polymers into these systems [2]. The supposed advantages of this approach are both to improve the dispersion of the clay in the epoxy resin matrix and also to increase the degree of exfoliation that takes place when the system is cured. In the present work, we further investigate this idea by fabricating PLS nanocomposites based upon a bifunctional epoxy resin and an ¿NH terminated poly(ethyleneimine) hyperbranched polymer, which acts as the curing agent. The effect of the clay content is studied and the results are compared also with previous work in which the curing agent was a diamine [3].

  • Dielectric relaxation spectroscopy of epoxy resin cured with a hyperbranched poly(ethyleneimine)

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.
    Central and Eastern European Conference on Thermal Analysis and Calorimetry
    Presentation's date: 2013-08-28
    Presentation of work at congresses

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  • Study of molecular relaxations of a hyperbranched polymer and its interaction with an epoxy resin matrix

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.
    International Discussion Meeting on Relaxation in Complex Systems
    Presentation's date: 2013-07-23
    Presentation of work at congresses

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  • Thermal analysis of polymer layered silicate nanocomposites: identification of nanostructure development by DSC

     Shiravand, Fatemeh; Fraga Rivas, Iria; Cortes Izquierdo, M. Pilar; Calventus Sole, Yolanda; Hutchinson, John M.
    Central and Eastern European Conference on Thermal Analysis and Calorimetry
    Presentation's date: 2013-08-28
    Presentation of work at congresses

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  • Comparative results between three protocols for achieving highly exfoliated epoxy-clay nanocomposites

     Hutchinson, John M.; Shiravand, Fatemeh; Calventus Sole, Yolanda; Ferrando Piera, Francesc
    International Conference on Modification, Degradation and Stabilization of Polymers
    Presentation's date: 2013-09-10
    Presentation of work at congresses

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  • Isothermal curing of polymer layered silicate nanocomposites based upon epoxy resin by means of anionic homopolymerisation

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.
    Thermochimica acta
    Date of publication: 2013-12-20
    Journal article

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    The 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 effect of the nanoclay content, have been studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dielectric relaxation spectroscopy (DRS) and transmission electron microscopy (TEM). The vitrification phenomenon was observed during the isothermal cure process, and it was found that the nanocomposite with a low clay content (2 wt%), denoted EDM2, shows improved thermal properties with respect to the unreinforced resin (denoted ED), while the nanocomposite with a higher clay content (5 wt%), denoted EDM5, displayed inferior properties. The cure kinetics were analysed by different methods, and it was observed that the activation energy and kinetic parameters of EDM2 were lower compared to the other two systems. Examination of the nanostructure of the cured EDM2 nanocomposite showed partial exfoliation, while the EDM5 system retains an intercalated nanostructure. In the DRS studies of the curing process of the EDM2 system, two dielectric relaxations were detected, which are associated with the molecular mobility in the curing reaction which takes place both outside and inside the clay galleries.

    The 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 effect of the nanoclay content, have been studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dielectric relaxation spectroscopy (DRS) and transmission electron microscopy (TEM). The vitrification phenomenon was observed during the isothermal cure process, and it was found that the nanocomposite with a low clay content (2 wt%), denoted EDM2, shows improved thermal properties with respect to the unreinforced resin (denoted ED), while the nanocomposite with a higher clay content (5 wt%), denoted EDM5, displayed inferior properties. The cure kinetics were analysed by different methods, and it was observed that the activation energy and kinetic parameters of EDM2 were lower compared to the other two systems. Examination of the nanostructure of the cured EDM2 nanocomposite showed partial exfoliation, while the EDM5 system retains an intercalated nanostructure. In the DRS studies of the curing process of the EDM2 system, two dielectric relaxations were detected, which are associated with the molecular mobility in the curing reaction which takes place both outside and inside the clay galleries.

  • Influence of the isothermal cure temperature on the nanostructure and thermal properties of an epoxy layered silicate nanocomposite

     Shiravand, Fatemeh; Hutchinson, John M.; Calventus Sole, Yolanda
    Polymer engineering and science
    Date of publication: 2013-03-08
    Journal article

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    The 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 isothermal cure reaction consists of two parts: a rapid intra-gallery reaction, attributed to homopolymerization of the TGAP catalyzed by the MMT and the extra-gallery cross-linking reaction of the TGAP with the DDS. Increasing cure temperature promotes the intra-gallery reaction, which should promote an exfoliated nanostructure; this is confirmed by transmission electron microscopy. These results indicate that this system (TGAP/DDS/MMT) is an excellent candidate for achieving exfoliated polymer-layered silicate nanocomposites and identifies a protocol for optimizing the degree of exfoliation. POLYM. ENG. SCI., 2013. © 2013 Society of Plastics Engineers

    The 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 isothermal cure reaction consists of two parts: a rapid intra-gallery reaction, attributed to homopolymerization of the TGAP catalyzed by the MMT and the extra-gallery cross-linking reaction of the TGAP with the DDS. Increasing cure temperature promotes the intra-gallery reaction, which should promote an exfoliated nanostructure; this is confirmed by transmission electron microscopy. These results indicate that this system (TGAP/DDS/MMT) is an excellent candidate for achieving exfoliated polymer-layered silicate nanocomposites and identifies a protocol for optimizing the degree of exfoliation.

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    Identification of nanostructural development in epoxy polymer layered silicate nanocomposites from the interpretation of differential scanning calorimetry and dielectric spectroscopy  Open access

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.
    Thermochimica acta
    Date of publication: 2012-05-08
    Journal article

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    The 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 (DRS) in non-isothermal cure at constant heating rate. The cure process takes place by homopolymerisation, initiated anionically using 3 wt% dimethylaminopyridine (DMAP), and the influence of the nanoclay content has been analysed. Interesting differences are observed between the nanocomposites with 2 wt% and 5 wt% clay content. At low heating rates, these samples vitrify and then devitrify during the cure. For the sample with 2 wt% clay, the devitrification is accompanied by a thermally initiated homopolymerisation, which can be identified by DRS but not by DSC. The effect of this is to improve the exfoliation of the nanocomposite with 2 wt% clay, as verified by transmission electron microscopy, with a corresponding increase in the glass transition temperature. These observations are interpreted in respect of the nanocomposite preparation method and the cure kinetics.

  • Isothermal and non-isothermal cure of a tri-functional epoxy resin (TGAP): a stochastic TMDSC study

     Hutchinson, John M.; Calventus Sole, Yolanda; Shiravand, Fatemeh; Fraga Rivas, Iria
    Thermochimica acta
    Date of publication: 2012-02-10
    Journal article

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    The 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 differential scanning calorimetry (DSC) and by a stochastic temperature modulated DSC technique, TOPEM. From a series of isothermal cure experiments for increasing cure times, the glass transition temperature Tg as a function of isothermal cure time is determined by conventional DSC from a second (non-isothermal) scan, and the vitrification time tv is obtained as the time at which Tg = Tc. In parallel, TOPEM experiments at the same Tc lead directly to the determination of tv from the sigmoidal change in the quasi-static heat capacity. It is not possible to identify the glass transition temperature of the fully cured system, Tg∞, in a third scan by conventional DSC. In contrast, with TOPEM a second (non-isothermal) scan at 2 K/min after the isothermal cure gives rise to three separate transitions: devitrification of the partially cured and vitrified material; almost immediate vitrification as the Tg of the system again rises; finally another devitrification, at a temperature approximating closely to Tg∞. Thus with TOPEM it is possible to obtain a calorimetric measure of the glass transition temperature of this fully cured system.

  • Thermal Analysis of Enhanced Poly (vinyl alcohol)-Based Proton-Conducting Membranes Crosslinked with Sulfonation Agents for direct Methanol Fuel Cells

     Morancho Llena, Jose Maria; Salla Tarrago, Jose M.; Cadenato Matia, Ana Maria; Fernández-Francos, Xavier; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Ramis Juan, Xavier; Ruiz Mansilla, Rafael
    Journal of applied polymer science
    Date of publication: 2012-06-25
    Journal article

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  • Dielectric study of the glass transition of PET/PEN blends

     Sellarès González, Jordi; Diego Vives, Jose Antonio; Cañadas Lorenzo, Juan Carlos; Mudarra Lopez, Miguel; Belana Punseti, Juan; Colomer Vilanova, Pere; Roman Concha, Frida Rosario; Calventus Sole, Yolanda
    Journal of physics D. Applied physics
    Date of publication: 2012-11-19
    Journal article

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  • Nuevos termoestables mejorados basados en resinas epoxi y polímeros dendríticos

     Hutchinson, John M.; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Roman Concha, Frida Rosario; Shiravand, Fatemeh
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  • NUEVOS TERMOESTABLES MEJORADOS BASADOS EN RESINAS EPOXI Y POLIMEROS DENDRITICO

     Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Roman Concha, Frida Rosario; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Hutchinson, John M.
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  • Intra- and extra-gallery reactions in tri-functional epoxy polymer layered silicate nanocomposites

     Hutchinson, John M.; Shiravand, Fatemeh; Calventus Sole, Yolanda
    Journal of applied polymer science
    Date of publication: 2012-09-05
    Journal article

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    Achieving 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 which shows significant promise in this respect. The isothermal cure of PLS nanocomposites based upon a tri-functional epoxy resin (TGAP) has been studied by DSC, and displays two exothermic peaks. The first peak, very rapid, relates to a homopolymerization reaction within the intra-gallery regions, while the second peak reflects the bulk crosslinking reaction. The occurrence of the intra-gallery reaction before the bulk reaction enhances the degree of exfoliation in the cured nanocomposite. Furthermore, pre-conditioning the resin/clay mixture before adding the curing agent and effecting the isothermal cure also allows a greater extent of intra-gallery reaction to occur before the extra-gallery epoxy-amine reaction. Consequently, this system results in a high degree of exfoliation, as revealed by transmission electron microscopy.

  • Kinetic studies of the degradation of poly (vinyl alcohol)-based proton-conducting membranes at low temperatures

     Morancho Llena, Jose Maria; Salla Tarrago, Jose M.; Cadenato Matia, Ana Maria; Fernandez Francos, Xavier; Ramis Juan, Xavier; Colomer Vilanova, Pere; Ruiz Mansilla, Rafael; Calventus Sole, Yolanda
    Thermochimica acta
    Date of publication: 2011-07-10
    Journal article

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    Thermal decomposition of unmodified poly(vinyl alcohol) (PVA) and poly(vinyl alcohol) crosslinked with sulfosuccinic acid (SSA) membranes has been studied using thermogravimetry (TGA) and ATR Fourier transform infrared spectroscopy (ATR-FTIR). Both types of membranes degrade in a two-step process. However, the introduction of SSA leads to an advance of the decomposition steps at very low temperatures. The reduction in the hydrogen-bond interactions of hydroxyl groups of unmodified PVA because of the presence of SSA crosslinks and the catalytic effect promoted by sulfonic acid group (–SO3H) of SSA can contribute to this different behavior. The kinetics of thermal degradation was investigated by TGA and derivative TGA (DTGA) curves from experiments under non-isothermal conditions at different heating rates. The Friedman isoconversional differential method was used to calculate the activation energy as a function of the reaction weight loss without any previous assumption on the kinetic model. For a representative stage of decomposition, preexponential factor and kinetic model were also obtained. Postcuring isothermal treatments and ATR-FTIR analysis of selected membranes have been used to verify the TGA analysis and add additional information.

  • Influenze of nanoclay in the anionic homopolymerisation of epoxy nanocomposites

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.
    International Symposium Frontiers in Polymer Science
    Presentation's date: 2011-05-29
    Presentation of work at congresses

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  • The advantages of TOPEM in studying the cure of a trifunctional epoxy resin (TGAP)

     Hutchinson, John M.; Calventus Sole, Yolanda; Shiravand, Fatemeh; Fraga Rivas, Iria
    European Polymer Congress
    Presentation's date: 2011-06-30
    Presentation of work at congresses

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  • Characterisation and cure kinetics of epoxy-clay nanocomposites cured using an anionic initiator

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.
    European Polymer Congress
    Presentation's date: 2011-06-30
    Presentation of work at congresses

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  • Q-00006

     Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Calventus Sole, Yolanda; Puig Montada, Ana M.; Castro Gonzalez, Jesus
    Participation in a competitive project

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  • Thermal analysis of enhanced poly(vinyl alcohol)-based proton-conducting membranes crosslinked with sulfonation agents for direct methanol fuel cells

     Salla Tarrago, Jose M.; Cadenato Matia, Ana Maria; Morancho Llena, Jose Maria; Fernandez Francos, Xavier; Ramis Juan, Xavier; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Ruiz Mansilla, Rafael
    European Symposium on Thermal Analysis and Calorimetry
    Presentation's date: 2010-08-23
    Presentation of work at congresses

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  • Influencia del silicato laminar en la homopolimerización aniónica de nanocompuestos de epoxi

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Hutchinson, John M.; Montserrat Ribas, Salvador
    Simposio Latinoamericano de Polímeros y Congreso Iberoamericano de Polímeros
    Presentation's date: 2010-07-14
    Presentation of work at congresses

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  • Anionic polimerization of polymer layered silicate nanocomposites based upon epoxy resin

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Hutchinson, John M.; Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Montserrat Ribas, Salvador
    European Symposium on Thermal Analysis and Calorimetry
    Presentation's date: 2010-08-28
    Presentation of work at congresses

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  • Poster Award Winner of the 10th. European Symposium on Thermal Analysis and Calorimetry

     Salla Tarrago, Jose M.; Cadenato Matia, Ana Maria; Fernandez Francos, Xavier; Ramis Juan, Xavier; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Ruiz Mansilla, Rafael; Morancho Llena, Jose Maria
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  • Thermal and oxidative degradation of epoxy based layered silicate nanocomposites

     Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Hutchinson, John M.; Montserrat Ribas, Salvador
    Congreso Nacional de Materiales Compuestos
    Presentation's date: 2009-10-07
    Presentation of work at congresses

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    The 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 degradation process, and hence emphasises the importance of this aspect of nanocomposite preparation.

  • Efecto de la temperatura de procurado en el entrecruzamiento de membranas conductoras basadas en el polivinil alcohol (PVA) y el ácido sulfosuccínico (SSA)

     Morancho Llena, Jose Maria; Salla Tarrago, Jose M.; Cadenato Matia, Ana Maria; Ramis Juan, Xavier; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Ruiz Mansilla, Rafael; Fernandez Francos, Xavier
    Reunión del Grupo Especializado de Polímeros (RSEQ y RSEF)
    Presentation's date: 2009-09
    Presentation of work at congresses

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  • Procesos de Sorción-desorción de Agua en Membranas Para Pilas de Combustible Alimentadas Directamente con Metanol

     Cadenato Matia, Ana Maria; Salla Tarrago, Jose M.; Ramis Juan, Xavier; Morancho Llena, Jose Maria; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Ruiz Mansilla, Rafael; Fernandez Francos, Xavier
    Jornadas Nacionales de Ingeniería Termodinámica
    Presentation's date: 2009-06-03
    Presentation of work at congresses

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  • Procesos de sorción-desorción de agua en membranas para pilas de combustible alimentadas directamente con metanol

     Cadenato Matia, Ana Maria; Salla Tarrago, Jose M.; Ramis Juan, Xavier; Morancho Llena, Jose Maria; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Ruiz Mansilla, Rafael; Fernandez Francos, Xavier
    VI Jornadas nacionals de Ingeniería Termodinàmica
    Presentation's date: 2009-06-03
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  • NUEVOS TERMOESTABLES HIBRIDOS NANOESTRUCTURADOS CON PROPIEDADES MEJORADAS A BASE DE RESINS EPOXI Y POLIMEROS HIPERRMIFICADOS

     Calventus Sole, Yolanda; Montserrat Ribas, Salvador; Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Hutchinson, John M.; Roman Concha, Frida Rosario; Colomer Vilanova, Pere
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  • POLÍMERS TERMOESTABLES EPOXIDICS

     Morancho Llena, Jose Maria; Calventus Sole, Yolanda; Hutchinson, John M.; Fernandez Francos, Xavier; Roman Concha, Frida Rosario; Cadenato Matia, Ana Maria; Colomer Vilanova, Pere; Salla Tarrago, Jose M.; Fraga Rivas, Iria; Ramis Juan, Xavier
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  • Estudio de pilas de combustiblediseñadas con membranas poliméricas dotadas de control morfológico para bioalcoholes

     Calventus Sole, Yolanda
    Jornadas Internacionales. Nuevos materiales para pilas de combustible
    Presentation's date: 2008-01-24
    Presentation of work at congresses

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  • Estudio de pilas de combustible diseñadas con membranas poliméricas dotadas de control morfológico para bioalcoholes. ENER2007-6784-C03-01

     Cadenato Matia, Ana Maria; Salla Tarrago, Jose M.; Calventus Sole, Yolanda; Colomer Vilanova, Pere; Ruiz Mansilla, Rafael
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  • Physical aging of thermosetting powder coatings

     Montserrat Ribas, Salvador; Calventus Sole, Yolanda; Hutchinson, John M.
    Progress in organic coatings
    Date of publication: 2006-01
    Journal article

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  • Tevnologia Energética y Medio Ambiente volum 1

     Calventus Sole, Yolanda; Carreras Planells, Ramon; Casals Casanova, Miquel; Colomer Vilanova, Pere; Costa, M; Jaen, A; Montserrat Ribas, Salvador; Oliva Llena, Asensio; Quera Miro, Manuel; Roca Ramon, Xavier
    Date of publication: 2006-02
    Book

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  • Tecnología Energética y Medio Ambiente volum II

     Calventus Sole, Yolanda; Carreras Planells, Ramon; Casals Casanova, Miquel; Colomer Vilanova, Pere; Costa, M; Jaen, A; Montserrat Ribas, Salvador; Oliva Llena, Asensio; Quera Miro, Manuel; Roca Ramon, Xavier
    Date of publication: 2006-02
    Book

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  • TERFIQ UPC GROUP. Preparation and Properties of Nanoestructured Polymers

     Montserrat Ribas, Salvador; Hutchinson, John M.; Roman Concha, Frida Rosario; Colomer Vilanova, Pere; Calventus Sole, Yolanda; Cortes Izquierdo, M. Pilar; Fraga Rivas, Iria; Lipinska, Magdalena
    UPC Workshop on Nanoengineering
    Presentation of work at congresses

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  • Effect of cooling rate and frequency on the calorimetric measurement of the glass transition

     Montserrat Ribas, Salvador; Calventus Sole, Yolanda; Hutchinson, John M.
    Polymer
    Date of publication: 2005-12
    Journal article

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  • Situación de la Fisicoquimica en los planes de estudio actules en las Escuelas de Ingenieria

     Colomer Vilanova, Pere; Montserrat Ribas, Salvador; Calventus Sole, Yolanda
    JORNADAS SOBRE CONTENIDOS Y METODOLOGIAS DIDACTICAS EN EL AREA DE MAQUINAS Y MOTORES TERMICOS
    Presentation of work at congresses

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  • Physical ageing of thermosetting powder coatings

     Hutchinson, John M.; Calventus Sole, Yolanda; Montserrat Ribas, Salvador
    8th European Symposium on Polymer Blends and Eurofillers 2005
    Presentation of work at congresses

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  • Physical ageing of thermosetting powder coatings

     Calventus Sole, Yolanda; Montserrat Ribas, Salvador; Hutchinson, John M.
    8th European Symposium on Polymer Blends and Eurofillers 2005
    Presentation of work at congresses

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  • Cinética de la reticulación de pinturas en polvo de poliester carboxilado-Primid mediante análisis dieléctrico

     Montserrat Ribas, Salvador; Roman Concha, Frida Rosario; Calventus Sole, Yolanda; Hutchinson, John M.; Muñoz Guerra, Sebastian
    IX Reunion del Grupo Especializado de Polímeros. Nuevas fronteras en polímeros
    Presentation of work at congresses

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