Official Journal of the Japan Wood Research Society
Table 1 Chemical analysis of the wood components of untreated and heat-treated eucalypt wood
Composition | Untreated | Heat treat temperature (°C) | ||||
|---|---|---|---|---|---|---|
160 | 180 | 200 | 220 | 240 | ||
Klason lignin* (%) | 30.88 | 32.29 | 32.39 | 32.53 | 33.45 | 35.30 |
Holocelllulose* (%) | 74.25 | 68.17 | 65.68 | 62.17 | 56.17 | 47.06 |
Alpha-cellulose in holocellulose* (%) | 45.42 | 41.83 | 40.76 | 39.02 | 33.97 | 23.11 |
Alcohol-benzene solubility* (%) | 1.59 | 1.93 | 1.98 | 2.08 | 2.79 | 3.94 |
1% NaOH solubility* (%) | 13.14 | 18.02 | 17.72 | 17.30 | 16.68 | 15.76 |