摘要
采用化学分析方法和ＵＶ、ＩＲ、ＧＰＣ、ＮＭＲ等现代分析手段对桉木木素的结构组成进行了研究。结果表明桉木木素由愈创木基和紫丁香基结构单元组成，两结构单元比例约为０．５６：０．４４，其结构单元实验式为Ｃ９Ｈ８．Ｏ９Ｏ３．３Ｏ（ＯＣＨ３）１．４４。桉木木素中的甲氧基含量和酚羟基含量较高，每Ｃ９单元中含有０．４５个β－０一４结构及少量的β－β和β－５结构，每Ｃ９单元中有０．４３个缩合单元，桉木木素中含有少量的共轭芳香酸的脂类。
Milled wood lignin(MWL) was isolated from E. Leilin No. 1, and analyzed with UV, IR, GPC and NMR. The results of this study show that the lignin was composed of syringyl(S) and guaiacyl(G) units.The S to G ratio was 0.56 : 0.44. the lignin contained 0.32-0.34 phenolic hydroxyl groups and 1.34 aliphatic hydroxyl groups per C, unit and 0.45 β-0-4 structure per C9 unit.
出处
《中国造纸学报》
CAS
CSCD
北大核心
1994年第1期80-86,共7页
Transactions of China Pulp and Paper
