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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5193

    Título
    Fabrication of microporous PMMA using ionic liquids: An improved route to classical ScCO2 foaming process
    Autor
    Trigo López, Miriamuntranslated Orcid
    Vallejos Calzada, Saúluntranslated
    Reglero Ruiz, José A.untranslated
    Ramos Rodríguez, Ciprianountranslated
    Beltrán Calvo, Sagrariountranslated
    García García, Félix Clementeuntranslated
    García Pérez, José Migueluntranslated
    Publicado en
    Polymer. 2019, V. 183, n. 21, 121867
    Editorial
    Elsevier
    Fecha de publicación
    2019-11
    ISSN
    0032-3861
    DOI
    10.1016/j.polymer.2019.121867
    Abstract
    The use of supercritical CO2 (ScCO2) has been established as a standard technique to produce micro- and nanocellular polymers with controlled morphologies and cell sizes between 500 nm and several microns. However, overcoming the gap between micro and nanocellular polymers implies the use of long saturation times (up to several days) and low temperatures (below 0 °C) combined with high saturation pressures (above 30 MPa). This work presents a different approach to obtain microporous poly (methyl methacrylate) (PMMA) structures with controlled morphologies using a physical procedure employing ionic liquids that are mixed in solution with PMMA. The ionic liquid can produce interesting fine microporous materials simply by being removed with distilled water. The work compares the two fabrication methods previously mentioned to critically analyze the benefits and drawbacks of each preparation route. The method in this paper opens the possibility to obtain microporous polymers by employing ionic liquids, thus reducing the time of processing, avoiding specific foaming equipment and broadening the applicability of crosslinked and semi crystalline polymers. Low velocity tensile test results are also presented to point out the improvement in the mechanical parameters of microporous films obtained from ionic liquids compared to those of films foamed using ScCO2.
    Palabras clave
    Ionic liquid
    ScCO2
    Microporous film
    PMMA
    Materia
    Química orgánica
    Chemistry, Organic
    URI
    http://hdl.handle.net/10259/5193
    Versión del editor
    https://doi.org/10.1016/j.polymer.2019.121867
    Collections
    • Artículos BIOIND
    • Artículos POLYMERS
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