CONDENSATION OF LIGNIN DURING HEATING OF WOOD

被引：112
|
作者：
FUNAOKA, M
KAKO, T
ABE, I
机构：
[1] Department of Forest Products Faculty of Bioresources, Mie University, Tsu, Mie, 514
来源：
WOOD SCIENCE AND TECHNOLOGY | 1990年 / 24卷 / 03期
关键词：
D O I：
10.1007/BF01153560
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
The structural change of lignin during heating of wood was investigated quantitatively by a method combining nucleus exchange and nitrobenzene oxidation. Lignin modification during heating was mainly a diphenylmethane type condensation. About 40 and 75% of noncondensed units in protolignins were converted to diphenylmethane type units by heating of dry and wet wood meals up to 220 °C, respectively. On the other hand, during heating of modified lignin (dioxane lignin) various types of modifications in addition to diphenylmethane type condensation occurred. Lignin modification via the diphenylmethane type condensation was proposed as a new route for its utilization. © 1990 Springer-Verlag.
引用
收藏
页码：277 / 288
页数：12
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