Abstract
To make composite materials composed by biomass and biodegradable plastics, the wettability between sugi wood and biodegradable plastics have been studied, which are useful in enviromental view. The wettability between sugi wood and biodegradable plastics were increased with increasing heating temperature. Moreover, breaking stress were increased with increasing temperature up to 170℃, and decreased from 170℃ because the coupling strength of the lignin of Sugi may fall at that temperature. It is necessary to combine sugi wood and biodegradable plastics at lower than 170℃.