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Title
Effect of different wood species on the performance of surfactants used to improve the rate of kraft liquor penetration into chips
Authors
D. Chen D. Berk R. Berry And G. J. Kubes
Received
April 29, 2010
Published
Volume 45 Issue 1-2 January-February
Keywords
penetration, Betula Pendula, Eucalyptus Globulus, Eucalyptus Grandis, Lodgepole pine, aspen,
Abstract
The paper describes the application of the penetration instrument, previously developed and tested with aspen wood only, to other wood species. The evaluation was done for three resinous species (Betula Pendula, Eucalyptus Globulus and Eucalyptus Grandis), for Lodgepole pine samples in different stages of infestation by mountain pine beetle and, finally, for non-resinous softwood species (black spruce). It was found out that the amount and the chemical composition of extractives play an important role in the efficiency of surfactants, which are more effective with highly resinous wood. Surfactants considerably improved the liquor penetration through the grey stage (the most advanced stage) of Lodgepole pine infestation, even if this had not been possible with samples in the red stage. It was confirmed again that the rate of penetration into non-/resinous softwood species cannot be improved with surfactants.
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