Nano clay reinforced xylan barriers

Riku A. Talja, Francis Clegg, Chris Breen, Kristiina Poppius-Levlin

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


Birch wood xylan, plasticized with glycerol and reinforced with a nano clay, bentonite, was coated onto paper as a barrier layer. Bentonite increased the viscosity of plasticized xylan solutions, which had a positive influence on coating ability. X-ray diffraction traces of the xylan bentonite coatings confirmed that the interlayer distance of the bentonite particles had increased indicating that the xylan and/or glycerol resides in the interlayer region. The water vapour barrier properties were enhanced by dispersing bentonite into the glycerol-plasticized xylan coating. The improvement in properties varied from moderate to significant (340 to 56 g m-2 d-1). The permeability of diagnostic aroma compounds also decreased. Scanning electron micrographs confirmed that the best xylan-glycerol-clay coatings were intact without any pinholes.
Original languageEnglish
Title of host publicationThe 3rd Nordic Wood Biorefinery Conference (NWBC 2011)
Subtitle of host publicationOral presentations
Place of PublicationStockholm, Sweden
Publication statusPublished - 2011
MoE publication typeB3 Non-refereed article in conference proceedings
Event3rd Nordic Wood Biorefinery Conference, NWBC 2011 - Stockholm, Sweden
Duration: 22 Mar 201124 Mar 2011 (Programme) (Posters)


Conference3rd Nordic Wood Biorefinery Conference, NWBC 2011
Internet address


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