Evaluation of Black Locust (R. Pseudoacacia) as Raw Material for Wet-Process Hardboard

Wet-process hardboards were made from fiber from small, whole black locust (R. pseudoacacia) stems (including bark) and from pure locust heartwood. Heartwood extractives were apparently stem-extracted and lost to cyclone condensate during digesting. Despite this apparent loss of extractives, the hardboards showed good resistance to weight and strength losses caused by the decay fungi C. versicolor and G. trabeum. Dry mechanical properties of all locust boards were acceptable. Dimensional stability properties of boards from pure heartwood were good, but the boards from whole stems showed considerable moisture absorption in exposure to high humidity, and corresponding excessive thickness swelling. These boards from whole stems showed poor exterior durability.

You must be logged in to download any documents. Please login (login accounts are free) or learn how to Become a Member