Contact
    Start Publications Amphiphilic polysaccharide based on curdlan: Synthesis and ...
    ←  Publication Finder
    Attension

    Amphiphilic polysaccharide based on curdlan: Synthesis and behaviour in aqueous solution

    Year: 2019

    Journal: Carbohydr. Polym., Volume 224, NOV 15

    Authors: Popescu, I.; Pelin, I. M.; Ailiesei, G. L.; Ichim, D. L.; Suflet, D. M.

    Organizations: Project "Partnerships for knowledge transfer in the field of polymer materials used in biomedical engineering" [ID_40_443, 86/8.09.2016]; MY SMIS [105689]; European Regional Development Fund, Competitiveness Operational Programme 2014-2020

    Keywords: Cationic curdlan derivative; Quaternary ammonium groups; Amphiphilic polyelectrolyte; Antimicrobial derivative

    Amphiphilic polyelectrolyte based on curdlan derivative containing quaternary ammonium groups with a degree of substitution up to 0.4 was synthesized and characterized. The chemical structure of the amphiphilic curdlan derivative was confirmed by FTIR, C-13 and H-1 NMR spectroscopy. The 2D NMR homo- and heteronuclear correlations were used to attribute the ambiguous 1D NMR signals from H-1 and C-13 spectra. The hydrodynamic properties of this new derivative were studied by capillary viscometry. The non-linear Wolf equation was used to determine the intrinsic viscosity and the scaling theory was used to delimitate the concentration domains. The self-aggregation of the amphiphilic derivative was studied by fluorescence spectroscopy using pyrene and N-phenylnaphthylamine as micropolarity sensitive probes, and by surface tension measurements. The results obtained from the antibacterial and antifungal tests performed on E. coli, P. aeruginosa bacteria, and C. albicans fungi recommend this new amphiphilic derivative to be used either as a soluble biopolymer or as a precursor for the preparation of new biomaterials with antimicrobial properties.
    View publication