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Title: Preliminary investigation of biological resistance, water absorption and swelling of thermally compressed pine wood panels

Source: IRG/WP ; 08-40396. Stockholm, Sweden : IRG Secretariat, 2008: 11 pages

Author(s)Unsal, Oner; Kartal, S. Nami; Candan, Zeki; Arango, Rachel; Clausen, Carol A.; Green, Frederick

Publication Year: 2008  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4723-4

Abstract: Wood can be modified by compressive, thermal and chemical treatments. Compression of wood under thermal conditions is resulted in densification of wood. This study evaluated decay and termite resistance of thermally compressed pine wood panels at either 5 or 7 MPa and at either 120 or 150C for one hour. The process caused increases in density and decreases in thickness of the panels; however, laboratory decay resistance tests using one brown rot fungus and one white rot fungus revealed that thermally compressed wood was not resistance against the fungi tested. More interesting results were found in laboratory termite resistance tests. As pressure and temperature increased up to 7 MPa and 120C, mass losses in the specimens decreased gradually when compared to control specimens. However, the specimens compressed at 7MPa and 150C showed higher mass losses in comparison with the specimens compressed at 7 MPa and 120C. Decay and termite resistance of such materials is still controversial even though density is improved under thermal processing.

Keywords: Thermal compression, heat modification, decay resistance, termite resistance, swelling, water absorption, heat treatment, pine, mechanical properties, wood moisture, wood-decaying fungi, insect pests, insect control, wood biodegradation, biodegradation, termites, wood deterioration, deterioration, absorption, wood density, compressed wood, scotch pine, mechanical properties, swelling, modified wood, dimensional stability, hygroscopicity, moisture content, termite control, resistance to decay, decomposition of wood

File size: 174 kb(s)

This publication is also viewable on Treesearch:  view
RITS Product ID: 4218
Current FPL Scientists associated with this product (listed alphabetically)
Clausen, Carol A.
Supervisory Research Microbiologist
Green, Frederick
Research Microbiologist
 

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