Abstract
The Potential as molecular materials of fiberboards through the phase-separation system was examined. Fiberboards were separated rapidly and quantitatively into carbohydrates and lignophenols through the phase-separation system composed of phenol derivatives and acid. Although the plant cell walls form IPN (Interpenetrating Polymer Network) structure, fibrillated lignocelllosics (fiberboard) had high accessibility for the regents, thus acid hydrolysis of carbohydrates and phenol grafting to native lignin were accelerated. The resulting lignophenols and sugars from fiberboards had almost the same properties as those from wood meal, although a slight amount of the urea-melamine resin adhesive component were contained in the lignophenol. These results indicated that the fiberboard are preferable to original wood as aliphatic and aromatic material sources, and should be adapted to the molecular level recycling through the phase-separation system.
