Biocomposites of Nanofibrillated Cellulose, Polypyrrole, and Silver Nanoparticles with Electroconductive and Antimicrobial Properties

Patrycja Bober, Jun Liu, Kirsi S. Mikkonen, Petri Ihalainen, Markus Pesonen, Carme Plumed-Ferrer, Atte von Wright, Tom Lindfors, Chunlin Xu, Rose-Marie Latonen

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    76 Sitaatiot (Scopus)

    Abstrakti

    In this work, flexible and free-standing composite films of nanofibrillated cellulose/polypyrrole (NFC/PPy) and NFC/PPy-silver nanoparticles (NFC/PPy-Ag) have been synthesized for the first time via in situ one-step chemical polymerization and applied in potential biomedical applications. Incorporation of NFC into PPy significantly improved its film formation ability resulting in composite materials with good mechanical and electrical properties. It is shown that the NFC/PPy-Ag composite films have strong inhibition effect against the growth of Gram-positive bacteria, e.g., Staphylococcus aureus. The electrical conductivity and strong antimicrobial activity makes it possible to use the silver composites in various applications aimed at biomedical treatments and diagnostics. Additionally, we report here the structural and morphological characterization of the composite materials with Fourier-transform infrared spectroscopy, atomic force microscopy, and scanning and transmission electron microscopy techniques.
    AlkuperäiskieliEi tiedossa
    Sivut3655–3663
    JulkaisuBiomacromolecules
    Vuosikerta15
    Numero10
    DOI - pysyväislinkit
    TilaJulkaistu - 2014
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • Cellulose
    • conducting polymers
    • Silver nanoparticles
    • antimicrobial effect

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