Perspective and Current Research Trend of Pulping Research

Abstract

By a wide survey of inhomogeneity of lignin structure, a certain tendency was found among characteristic factors of lignin structure. Generally, when a certain tree species has lower lignin content, its lignin is richer in β-O-4 structure, especially of erythro type, and, syringyl type of aromatics. Interestingly, these characteristics are thought to be favorable for delignification reactions during pulping and bleaching. This result suggests the importance of the analysis of lignin structure for the survey of suitable woods for pulping.