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Homogeneous Sulfation of Xylan from Different Sources
Author(s) -
Daus Stephan,
PetzoldWelcke Katrin,
Kötteritzsch Manuela,
Baumgaertel Anja,
Schubert Ulrich S.,
Heinze Thomas
Publication year - 2011
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201000390
Subject(s) - xylan , sulfation , sulfate , homogeneous , molar ratio , mass spectrometry , molar mass , pyridine , elemental analysis , materials science , chemistry , nuclear chemistry , organic chemistry , chromatography , polysaccharide , catalysis , polymer , biochemistry , thermodynamics , physics
Abstract Xylan sulfates have been prepared under homogeneous reaction conditions in DMF/LiCl applying SO 3 /pyridine and SO 3 /DMF. The degree of substitution (DS Sulfate ) of the products obtained was determined by elemental analysis. DS Sulfate reached values of up to 1.90 applying a molar ratio of 3 mol sulfating agent per anhydroxylose unit. The structure of the xylans and of the xylan sulfates was studied in detail by one‐ and two‐dimensional NMR spectroscopy and MALDI‐TOF mass spectrometry.