Cationic Xylan Derivatives with High Degree of Functionalization |
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| Authors: | Katrin Schwikal Thomas Heinze Anna Ebringerová Katrin Petzold |
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| Affiliation: | 1. Centre of Excellence for Polysaccharide Research, Friedrich Schiller University of Jena, Humboldtstraße 10, 07743 Jena, Germany;2. Center of Excellence of the Slovak Academy of Sciences, Institute of Chemistry, Dúbravská cesta 9, 84538 Bratislava, Slovakia |
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| Abstract: | Xylan from birch wood was characterized regarding both the supramolecular structure (X-ray, CP/MAS 13C-NMR) and the sugar composition. The reaction of the birch wood xylan with 2,3-epoxypropyltrimethylammonium chloride in 1,2-dimethoxyethane as slurry medium yields water-soluble, cationic 2-hydroxypropyltrimethylammonium xylan derivatives with high degree of substitution (DS). The DS values up to 1.6 can be controlled by adjusting the molar ratio in a one step synthesis. The structure of the cationic xylan derivatives was confirmed by means of DEPT(135) NMR spectroscopy. Film forming properties of cationic xylan derivatives were investigated with SEM measurements. |
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| Keywords: | cationic polyelectrolyte film forming 2-hydroxypropyl-trimethylammonium xylan NMR spectroscopy SEM xylan |
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