Abstract
Composite boards were prepared using wood powder as a matrix and furfuryl alcohol (FA) or polyfurfuryl alcohol (PFA) as a binder with hydrogen peroxide/ferrous ion or nitric acid as an activator. PFA gave a board with tensile strength and water resistance superior to that obtained with FA ; the PFA degree of polymerization exerted a positive influence on board properties. Addition of the activator to the binder rather than to the matrix gave better results, suggesting that activation proceeds primarily through binder oxidation. Using the acetone-soluble fraction of pre-oxidized PFA as a binder gave the best results, the boards exhibiting a tensile strength over 50% above the reference phenol/resorcinol/formaldehyde (PRF) board.
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