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

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    76 Citeringar (Scopus)

    Sammanfattning

    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.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)3655–3663
    TidskriftBiomacromolecules
    Volym15
    Utgåva10
    DOI
    StatusPublicerad - 2014
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • Cellulose
    • conducting polymers
    • Silver nanoparticles
    • antimicrobial effect

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