Abstract
This paper demonstrates opportunities for wood-based
xylan derivatives to be used in coating applications. A
route for extraction and purification of white and pure
xylan from bleached birch kraft pulp is described as a
part of the production of high adsorption and high
crystalline pulp. Derivatization of the xylan during the
extraction step was also demonstrated. Efficient
derivatization of xylan to water soluble derivatives was
achieved and promising results were obtained in primary
application tests as a coating component in barrier
coatings on board and as a binder component in pigment
coating of offset paper. With the best xylan derivate
coating, the barrier properties were better than with a
commercial biopolymer coating, while oxygen permeability
was roughly one third of that for a polyethylene
terephthalate coating. Likewise, surface strength close
to the reference latex as a binder in pigment coatings
was achieved by a xylan derivative. This work is part of
a platform of hemicellulose derivatives enabling novel
application for this medium to high molar mass
hemicellulose of high purity
Original language | English |
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Pages (from-to) | 692-704 |
Journal | Industrial Crops and Products |
Volume | 44 |
DOIs | |
Publication status | Published - 2013 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Barrier coating
- birch kraft pulp
- hemicellulose
- modification
- pigment coating
- xylan