Cationised O-acetyl galactoglucomannans: synthesis and characterisation

Victor Kisonen, Chunlin Xu, Patrik Christoffer Eklund, Hanna Lindqvist, Anna Sundberg, Andrey Pranovich, Jari Sinkkonen, Francisco Vilaplana, Stefan Willför

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    12 Sitaatiot (Scopus)

    Abstrakti

    Water-soluble O-acetyl-galactoglucomannans (GGMs) can be obtained from Norway spruce by hot-water-extraction of the wood or as a side product by ultrafiltration of mechanical pulping waters. Cationic and amphiphilic polysaccharides and their derivatives are of interest for a number of applications and thus quaternary nitrogen moieties with cationic charge were grafted onto GGMs in the heterogeneous reaction to render a cationic polyelectrolyte. The degree of substitution was measured by elemental analysis of nitrogen, by quantitative (13)C NMR and interestingly also by polyelectrolyte titration and the results were congruent. NMR, matrix-assisted laser desorption/ionisation mass spectroscopy (MALDI-TOF-MS), and FT-IR analysis were used to characterise the product. THF or DMSO with water enhanced the reaction efficiency and decreased M(w) reduction in comparison to plain water as a reaction media. Cationised GGM was also successfully acetylated. The cationic derivatives of hemicelluloses can potentially be utilised as polyelectrolyte layers in packaging and pharmaceutical applications.
    AlkuperäiskieliEi tiedossa
    Sivut755–764
    JulkaisuCarbohydrate Polymers
    Vuosikerta99
    DOI - pysyväislinkit
    TilaJulkaistu - 2014
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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