Now showing items 1-11 of 11

  • Characterization of polycarbonate foam structures prepared by one-step SC-CO2 dissolution process 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (2012)
    Conference lecture
    Open Access
    In this communication polycarbonate foams were prepared by a supercritical CO2 dissolution one-step batch foaming process. Firstly, CO2 diffusion behavior in polycarbonate was studied by means of desorption experiments. ...
  • Comportamiento mecánico dinámico de espumas de policarbonato 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Conference report
    Restricted access - publisher's policy
    Se caracterizan por DMTA espumas de policarbonato (PC) y de policarbonato con nanopartículas de grafeno, producidas mediante dos procesos diferentes de disolución de CO2 supercrítico con posterior expansión en una o en dos ...
  • Graphene-induced crystallinity of bisphenol A polycarbonate in the presence of supercritical carbon dioxide 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Velasco Perero, José Ignacio (Elsevier, 2013-11-01)
    Article
    Restricted access - publisher's policy
    Changes in the crystallinity of polycarbonate (PC) induced by the simultaneous presence of 0.5 wt% graphene nanoplatelets (GnP) and supercritical carbon dioxide (sc-CO2) were examined by means of Raman spectroscopy, WAXS, ...
  • Influencia de las nanocargas en las propiedades termomecánicas de espumas poliméricas 

    Sousa Pais Antunes, Marcelo de; Gedler, Gabriel; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (2012)
    Conference lecture
    Open Access
    Se presenta la influencia de nanopartículas y nanofibras sobre las propiedades termomecánicas de espumas poliméricas. A una formulación base polipropileno especial para espumación se le incorporaron nanocargas (silicatos ...
  • Microstructural characteristics of graphene/polycarbonate nanocomposite foams 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Rende, Deniz; Schadler, Linda; Velasco Perero, José Ignacio; Ozisik, Rahmi (2014)
    Conference report
    Restricted access - publisher's policy
    The microstructural characteristics of polycarbonate-graphene nanocomposite foams prepared using supercritical CO2 foaming are investigated using small and wide angle X-ray diffraction to understand the effect of graphene, ...
  • Multifunctional foams made of polymer nanocomposites 

    Arencón Osuna, David; Velasco Perero, José Ignacio; Realiño, Vera; Antunes, Marcelo de Sousa Pais; Gedler, Gabriel (Campus de Terrassa de la UPC, 2013-06-13)
    Conference report
    Open Access
  • Multifunctional nanocomposite foams based on polypropylene with carbon nanofillers 

    Sousa Pais Antunes, Marcelo de; Gedler, Gabriel; Velasco Perero, José Ignacio (2013-05)
    Article
    Restricted access - publisher's policy
    This work considers the preparation and characterization of polypropylene foams with variable concentrations of graphene and carbon nanofibres, focussing on the influence of the foaming process and the nanofillers on the ...
  • Novel polycarbonate-graphene nanocomposite foams prepared by CO2 dissolution 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (IOP PUBLISHING LTD., 2012)
    Article
    Open Access
    Polycarbonate foams reinforced with 0,5 wt% of graphene were obtained by firstly melt-mixing the polycarbonate and graphene in an internal mixer, compression-moulding the melt-compounded grinded material and lastly dissolving ...
  • Nucleation efficiency of talc in the foaming behavior and cellular structure of polyolefin-based foams: new perspectives for optimized lightweight materials 

    Meli, Gilles; Abler, Caroline; Jouffret, Frédéric; Sousa Pais Antunes, Marcelo de; Gedler, Gabriel; Arencón Osuna, David; Velasco Perero, José Ignacio (2012)
    Conference report
    Restricted access - publisher's policy
    The research consisted in evaluating the nucleation efficiency of different types of talc (with different particle size distributions, morphologies and even surface modifications) in the foaming behaviour and cellular ...
  • Polycarbonate foams with tailor-made cellular structures by controlling the dissolution temperature in a two-step supercritical carbon dioxide foaming process 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Velasco Perero, José Ignacio (2014-04)
    Article
    Restricted access - publisher's policy
    Closed-cell polycarbonate foams were prepared using a two-step foaming process, which consisted of the initial dissolution of supercritical CO2(scCO2) into PC foaming precursors and their later expansion by heating using ...
  • Thermal stability of polycarbonate-graphene nanocomposite foams 

    Gedler, Gabriel; Sousa Pais Antunes, Marcelo de; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (2012)
    Article
    Restricted access - publisher's policy
    A thermogravimetric study in both nitrogen and air atmospheres has been carried out on unfilled and graphene-reinforced solid and foamed polycarbonate. Polycarbonate foams were prepared using a supercritical CO2 dissolution ...