Isolation, Characterisation and Material Properties of 4-O-Methylglucuronoxylan from Aspen



Hemicelluloses are among the most abundant biopolymers although they are not yet being used as materials. This study focused on isolating polymeric 4-O-methylglucuronoxylan, which is the most abundant heteropolysaccharide (hemicellulose) in aspen wood (Populus tremula). The wood chips were extracted sequentially with different liquids. The isolated xylan was analysed for carbohydratate composition, molecular weight and crystallinity. The alkali extraction procedure used is selective and yields a high xylose containing polymeric xylan from aspen wood. The xylan showed fair film forming properties, which were enhanced when the xylan was carboxymethylated in homogenous alkali solution. The carboxymethylated xylan was water soluble and formed excellent films which were partially crystalline.


High Performance Liquid Chromatography Steam Explosion Carbohydrate Composition Wood Chemistry Aspen Wood 
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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  1. 1.Dept of Polymer TechnologyChalmers Univeristy of TechnologyGöteborgSweden
  2. 2.Dept of Wood Sci and Forest ProdVirginia TechBlacksburgUSA
  3. 3.Swedish Pulp and Paper Research InstituteStockholmSweden

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