DISSOLVING-GRADE PULPS FROM HENEQUEN FIBER

被引：0
|
作者：
CAZAURANGMARTINEZ, MN [1 ]
PERAZASANCHEZ, SR [1 ]
CRUZRAMOS, CA [1 ]
机构：
[1] ROHM & HAAS CO,BRISTOL,PA 19007
来源：
CELLULOSE CHEMISTRY AND TECHNOLOGY | 1990年 / 24卷 / 05期
关键词：
D O I：
暂无
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：
A method to isolate cellulose from henequen (A. fourcroydes) fiber in high yield is presented, where the agave fiber is subjected to a prehydrolysis with dilute H2SO4 solution, followed by a hypochlorite step with NaClO, and alkaline extraction of the chlorolignins formed. The effects of concentration, time and temperature in each step are presented. The prehydrolysis stage significantly enhances subsequent steps; on the other hand, a high concentration of NaClO during the extraction degrades cellulose, even if the pH is kept to a value of 9. Under the conditions tested, purified cellulose pulp having at least 96% by weight of alpha-cellulose can be obtained.
引用
收藏
页码：629 / 638
页数：10
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