Development of wood-based materials composed of non-fossil resource substances.

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Wood-based materials bonded with citric acid which is derived from non-fossil resource were developed. When wood-based moldings were fabricated, a mixture of citric acid and lignocellulosic powders was molded. In manufacture of particleboard, mixture water solution of citric acid and sucrose was used as an adhesive. Powder spreading was applied when fabricating plywood. The physical properties and bonding mechanism of each material were clarified, and each optimal fabricating condition was alsoelucidated.