FT-IR SPECTROSCOPIC ANALYSIS ON WOOD CARBONIZATION MECHANISM

By FT-IR spectral study, an attempt has been made to investigate the variations of carbon net construction and main functional groups on the surface of carbonized material of Chinese fir wood in the process of carbonization. The results indicated that the variations of absorption intensity of three characteristic bands, 1600, 3100-3200 and 900-650 cm-1, and the shift of absorption peak of 1600 cm-1 can reflect the variations of aromatization degree and carbon net construction of the charcoal. With temperature rising, the degree of carbon polymerization is increasing, and the main functional groups on the charcoal surface are changed obviously. From 600-700℃, dehydration of the hydroxyls in carbonized material takes place abundantly, and the carbon net construction is developed highly. Furthermore, slow carbonization is beneficial to form better ordered carbon-net construction with less functional groups on the charcoal surface.