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Abstract

A piece of natural wood can be immersed in a first solution at a first temperature less than 100° C. and then immersed in a second solution at a second temperature greater than 100° C. so as to form a piece of partially-delignified wood. In some embodiments, the first and second solutions can be the same solution, and the immersion at the second temperature can be heating the solution from the first temperature to the second temperature. The immersion in the first and second solutions can be effective to remove 45-90% of lignin from the piece of natural wood and to destroy a structure of the ray cells in the piece of natural wood while retaining cell walls of the other cells. The partially-delignified wood can then be dried. After drying, the partially-delignified wood can be clastic along its tangential direction but inelastic along its radial and longitudinal directions.

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First Claim