Biological Resistance of Southern Pine and Aspen Flakeboards Made from Acetylated Flakes
- 1 January 1987
- journal article
- research article
- Published by Taylor & Francis in Journal of Wood Chemistry and Technology
- Vol. 7 (3) , 427-440
- https://doi.org/10.1080/02773818708085277
Abstract
Standard soil block tests can be used for southern pine and aspen flakeboards made with phenol-formaldenyde adhesive if the boards are first leached to remove toxic residual chemicals which inhibit fungal attack. Standard fungal cellar and termite tets can be applied directly without leaching. Flakeboards made from flakes acetylated by a new simplified dip acetic anhydride procedure are resistant to attack by brown-, white-, and soft-rot fungi and tunneling bacteria at acetyl weight gains above 15%. Acetylated flakeboards at 18 to 21% acetyl weight gains are not completely resistant to attack by subterranean termites.Keywords
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