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Title: The role of chemical transport in the brown-rot decay resistance of modified wood

Source: International Wood Products Journal

Author(s)Zelinka, Samuel; Ringman, R.; Pilgard, A.; Thybring, E. E.; Jakes, Joseph; Richter, K.

Publication Year: 2016  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4707-3B  FPL-4716-3A

Abstract: Chemical modification of wood increases decay resistance but the exact mechanisms remain poorly understood. Recently, Ringman and coauthors examined established theories addressing why modified wood has increased decay resistance and concluded that the most probable cause of inhibition and/or delay of initiation of brown-rot decay is lowering the equilibrium moisture content. In another recent study, Jakes and coauthors examined moisture-induced wood damage mechanisms, including decay and fastener corrosion, and observed that these mechanisms require chemical transport through wood cell walls. They proposed that chemical transport within wood cell walls is controlled by a moisture-induced glass transition in interconnected networks of hemicelluloses and amorphous cellulose. This paper shows how these models jointly suggest mechanisms by which wood modifications can inhibit brown-rot. Alternative mechanisms are also discussed. These models can be used to understand and further improve the performance of wood modification systems.

Keywords: Wood modification, Brown-rot decay, Diffusion, Chemical transport, Percolation theory, Glass transition temperature

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 205 kb(s)

Date posted: 08/05/2016

This publication is also viewable on Treesearch:  view
RITS Product ID: 79850
Current FPL Scientists associated with this product (listed alphabetically)
Jakes, Joseph
Research Materials Engineer
Zelinka, Samuel L.
Materials Research Engineer
 

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