The influence of pulping conditions on the structure of acetosolv eucalyptus lignins

被引：40

作者：

Vazquez, G

Antorrena, G

Gonzalez, J

Freire, S

机构：

[1] Department of Chemical Engineering, University of Santiago de Compostela

来源：

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY | 1997年 / 17卷 / 1-2期

关键词：

D O I：

10.1080/02773819708003124

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Acetosolv lignins obtained under a variety of pulping conditions as regards acetic acid concentration, catalyst concentration, temperature and pulping time were characterized structurally by elemental analysis, FTIR and H-1 and C-13 NMR spectroscopy, and determination of methoxyl group content. Increasing catalyst concentration and pulping time favours both the dissolution of lignin (by cleavage of alpha and beta-O-4 bonds) and the occurrence of condensation reactions. Increasing temperature favours the degradation of syringyl units more than of guaiacyl units.

引用

页码：147 / 162

页数：16

共 19 条

[1] SOLVENT EFFECTS ON ORGANOSOLV LIGNIN FROM PINUS-CARIBAEA-HONDURENSIS [J].