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    Título
    Laterally-resolved mechanical and tribological properties of laser-structured polymer nanocomposites
    Autor(es)
    Rodríguez Beltrán, René Israel
    Martínez-Tong, Daniel E.
    Reyes-Contreras, Adela
    Paszkiewicz, Sandra
    Szymczyk, Anna
    Ezquerra, Tiberio
    Moreno Pedraz, Pablo ManuelUSAL authority
    Rebollar, Esther
    Palabras clave
    Nanocomposites
    Laser induced nanostructures
    Nanomechanical properties
    Clasificación UNESCO
    2209.10 láseres
    Fecha de publicación
    2019
    Editor
    Elsevier Science Publishers (Amsterdam, Países Bajos)
    Citación
    Rodríguez- Beltrán, R.I., Martínez-Tong, D.E., Reyes-Contreras, A., Paszkiewicz, S., Szymczyk, A., Ezquerra, T.A., Moreno, P., Rebollar, E. (2019). Laterally-resolved mechanical and tribological properties of laser-structured polymer nanocomposites. Polymer, 168, pp. 178-184
    Abstract
    [EN]In this work, we report on a detailed quantitative nanomechanical mapping of free-standing films of poly(ethylene terephthalate) (PET) and the composite PET/expanded graphite (EG) with 0.4% in weight of the nanoadditive, and of these materials nanostructured by laser irradiation. By using atomic force microscopy, we obtained simultaneously the topography, surface elastic modulus and adhesion force maps of the materials. Young's modulus images exhibited higher values for the composite in comparison to those of the neat polymer and for the nanostructured films in contrast to the non-nanostructured ones. Additionally, we explored the tribological properties of these systems at the nanoscale. Using lateral force microscopy, we observed a decrease in the friction coefficient for the nanocomposite as compared to the neat polymer, while quantifying an increase for both laser-structured samples. Our results are discussed taking into consideration the possible changes that the samples might undergo during processing, as well as the changes imposed by the complex geometry of the nanometric features in these laterally-resolved mechanical measurements.
    URI
    http://hdl.handle.net/10366/139936
    ISSN
    0032-3861
    DOI
    10.1016/j.polymer.2019.02.034
    Versión del editor
    https://doi.org/10.1016/j.polymer.2019.02.034
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    • ALF. Artículos del Grupo de Investigación en Aplicaciones del Láser y Fotónica [49]
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