抄録
In recent years, ionic liquids have attracted attention as a new solvent of wood, but practically its solubility is low. In this study, eucalyptus wood meals with different delignification ratio were prepared by sodium chlorite treatment, and the solubility into ionic liquid, 1-Ethyl-3-methylimidazolium acetate ([Emim]Ac), was investigated at 80 ℃ and 24 h. The solubility was almost proportional to the lignin content of the wood meal. Lignin was hardly dissolved from wood meal into [Emim]Ac, however, after slight delignification, the rate of lignin dissolution was accelerated to give insoluble residue with lower lignin content.
