Abstract
Wood has been found to be convertible to a thermally flowable material by chemical modifications, in which thermoplastic properties can be conferred by internal plasticization. In some cases, the thermoplastic properties must be supplemented by externally blending the modified wood with plasticizers. Chemically modified wood and untreated wood have both been found to dissolve or liquefy in various solvents and solutions. The applications of liquefied wood solutions and plasticized wood are described for preparing films, sheets and other moldings from the chemically modified wood, for three-dimensionally cured plastic-like wooden boards, for deep-drawable hard boards, and for hot-melt adhesives. Also described is the surface-layer plasticization of wood for surface-densification and embossing, and the preparation of wood-based reactive adhesives.
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