Time-of-flight secondary ion mass spectrometry analysis of chitosan-treated viscose fibres

Matjaž Finšgar, Tijana Ristić, Pedro Fardim, Lidija Fras Zemljič

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    4 Sitaatiot (Scopus)

    Abstrakti

    Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was employed to analyse cellulose viscose fibres treated with different chitosan-based solutions. The analysis reports several new features in the TOF-SIMS spectra for systems with various forms of chitosan-treated surfaces. The characteristic positive ion TOF-SIMS signals for chitosan are reported at m/z 147.90, 207.07, and 221.09, and characteristic signals for trimethyl chitosan are present at m/z 58.03 and 102.09. Furthermore, new fragments were suggested to characterise acetylated chitosan molecules. The relative surface concentrations of different species were obtained based on the specific signal ratios (originating from a specific fragment and cellulose). SIMS imaging was then performed in order to investigate the surface distribution of chitosan, trimethyl chitosan, and Na-containing nanoparticles. In order to perform TOF-SIMS imaging, the above-mentioned characteristic signals were employed and m/z 22.99 was used for Na nanoparticles.
    AlkuperäiskieliEi tiedossa
    Sivut131–141
    JulkaisuAnalytical Biochemistry
    Vuosikerta557
    DOI - pysyväislinkit
    TilaJulkaistu - 2018
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • Cellulose
    • Chitosan
    • Viscose
    • surface analysis
    • ToF-SIMS
    • Nanoparticles
    • Secondary Ion Mass Spectroscopy

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