Residual extractives in unbleached aspen and pine kraft pulps and their fate on oxygen delignification

被引：1
|
作者：
Shin, Soo-Jeong [1 ]
Kim, Chul-Hwan [1 ]
机构：
[1] SUNY Syracuse, Fac Paper Sci & Engn, Coll Environm Sci & Forestry, Syracuse, NY 13210 USA
来源：
NORDIC PULP & PAPER RESEARCH JOURNAL | 2006年 / 21卷 / 02期
关键词：
residual extractives; oxygen delignification; linoleic acid; steryl esters; sterols; palmitic acid; aspen; pine;
D O I：
10.3183/npprj-2006-21-02-p260-263
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：
Residual extractives had a noticeable impact on the brightness of unbleached kraft pulps in hardwood (trembling aspen). Oxygen delignification effectively removed these brightness-impacting extractives. There were two different classes of extractives in aspen unbleached kraft pulps: the first consisted of chromophore-containing extractives, including linoleic acid and steryl ester, which were well removed in oxygen delignification, and the others were non chromophore-containing extractives, including sterols and palmitic acid, which were resistant to oxygen delignification.
引用
收藏
页码：260 / 263
页数：4
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