Determinación de condiciones óptimas para el tratamiento alcalino de fibras de fique empleadas como reforzantes de materiales compuestos

Cristina Castro, Ana Palencia, Iván Gutiérrez, Gustavo Vargas, Piedad Gañán

    Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

    3 Citas (Scopus)

    Resumen

    For the last decades, natural fibers have been used as reinforcement of friendly environmental polymeric composites, due to their technical, economical and environmental advantages that include: moderate mechanical and thermal properties. However, the OH groups in some of their chemical structures like cellulose, reduce the compatibility with hydrophobic polymeric matrices such as polyolefines. Natural fiber, usually are exposed to chemical and physical treatment to reduce their hydrophilic tendency and to enhance fiber/matrix adhesion. Alkalinization, alkali treatment or mercerization, is one of the most common procedures applied on natural fibers. This process introduces important changes on its mechanical properties, physical and morphological characteristics, and chemical composition. In spite of other studies, it is necessary define surface treatment conditions in accordance with industrial processing and environmental considerations. In this study, the influence of different alkali treatment conditions on the fique fiber tensile behavior has been evaluated. Treatment parameters as solution concentration, exposure time and dry conditions have been analyzed. Fourier transformation infrared spectrophotometry (FTIR) analysis, atomic force (AFM) and optical microscopies have been used to evaluate alteration on chemical and morphological characteristics. Treatment conditions that include low solution concentration bring a good enough quality in the mechanical behavior required by fique fiber bundles as polymeric reinforcement.

    Título traducido de la contribuciónDetermination of optimal alkaline treatment conditions for fique fiber bundles as reinforcement of composites materials
    Idioma originalEspañol
    Páginas (desde-hasta)136-142
    Número de páginas7
    PublicaciónRevista Tecnica de la Facultad de Ingenieria Universidad del Zulia
    Volumen30
    N.º2
    EstadoPublicada - ago. 2007

    Palabras clave

    • Alkaline treatment
    • Composites
    • Fique fiber bundles
    • Mechanical behavior
    • Morphology

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