Charge-Directed Fiber Surface Modification by Molecular Assemblies of Functional Polysaccharides

Beatriz Vega Erramuspe, Holger Wondraczek, Cíntia Salomão Pinto Zarth, Elina Heikkilä, Pedro Fardim, Thomas Heinze

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    18 Citeringar (Scopus)

    Sammanfattning

    Molecular assemblies, namely, polyelectrolyte complexes (PECs) composed of negatively charged xylan-based derivatives and a novel positively charged cellulose derivative (CN+), were used for interfacial modification of wood fibers by charge directed self-assembly. The adsorption process was studied using polyelectrolyte titration and elemental analysis. X-ray spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used as advanced techniques for the characterization of the modified fiber surfaces. The measurements revealed an intense interaction between the pulp fibers and PECs, and provided essential information for a better understanding of the adsorption process. The information gathered on this paper might contribute to the basis for the development of new value added products by the use of underutilized biomass.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)13388–13395
    TidskriftLangmuir
    Volym29
    Utgåva44
    DOI
    StatusPublicerad - 2013
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • Adsorption
    • polysaccharides
    • ToF-SIMS
    • photoelectron spectroscopy (XPS)
    • Cationic cellulose derivatives
    • Cellulose
    • Hemicelluloses

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