中国造纸学报2012，Vol.27Issue(2)：7-13,7.
漆酶/天然介体体系漂白硫酸盐竹浆的机理研究
The Mechanism of Bamboo Kraft Pulp Laccase and Natural Mediator System Bleaching
摘要
Abstract
In this paper, bamboo pulps were bleached with the sequence of oxygen deligninfication (0), laccase and natural mediator system bleaching (LMS), chelating treatment (Q) and hydrogen peroxide bleaching (P). Then, the residual lignins in the TCF bleached pulp were characterized by using GPC, TGA, FT-IR, 1H-NMR, and 13C-NMR, in order to study the bleaching mechanism, especially the mechanism of LMS bleaching. The GPC studies showed that the molecular weight of lignin decreased with the bleaching process, while Mw/Mn changed remarkably. The TGA studies showed that the thermal stability of lignin decreased in the bleaching process; The FT-IR, 1H-NMR, 13C-NMR studies showed that the lignin type of the bamboo pulp was GSH, the percentage of C unit was higher than that of ( S + H) , β-0-4', β-1' and β-5'were the linkages of C9, and the main linkage was β-0-4'; There are alphatic OH and aromatic OH in the bamboo lignin; The-OCH3 was removed, benzene was broken, and the percentage of alphatic OH inceased in bleaching; After LMS stage, the percentage of S increased, the percentage of H decreased and the percentage of β-1' linkage increased.关键词
硫酸盐竹浆/全无氯漂白/漆酶/天然介体体系漂白/GPC/TGAKey words
kraft bamboo pulp/ totally chlorine free (TCF) bleaching/ laccase and natural mediator system bleaching (LMS)/ GPC/ TGA/FT-IR/ NMR分类
轻工纺织引用本文复制引用
周生飞,詹怀宇,姚向荣,付时雨..漆酶/天然介体体系漂白硫酸盐竹浆的机理研究[J].中国造纸学报,2012,27(2):7-13,7.基金项目
国家自然科学基金(30972324)资助项目. （30972324）
