Canadian Forest Service Publications
Chemical, mechanical, and durability properties of mountain pine beetle infested timber. 2008. Kadla, J.F.; Lam, F.; Zaturecky, I. Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, Victoria, BC. Mountain Pine Beetle Program Working Paper 2008-02. 16 p.
Available from: Pacific Forestry Centre
Catalog ID: 28120
To mitigate the impact of the mountain pine beetle epidemic on the BC forest products sector, an understanding of the relationship between wood quality and time since infestation is needed. The proposed research project deals with the chemical and mechanical properties of mountain pine beetle-infested wood at various stages of attack. Using dynamic mechanical (DMA), and morphological (X-ray) analyses, the effect of mountain pine beetle on various wood components was determined and related to chemical composition. Chemical analysis did not show any significant differences in lignin content or sugar composition between stages of attack and location within the tree (top to bottom). Likewise, X-ray diffraction results showed similar crystallinity values (50±1) for different samples. DMA analysis revealed some significant differences between the 1st and 2nd transition temperatures in the tan curves of wood specimens conditioned at 60% humidity and 20ºC; proposed to be the effect of variations in structure and composition between trees and within a tree rather than levels of attack.