Co-salen仿酶的合成及其漂白性能  

Co-Salen Biomimetic Bleaching of Softwood Kraft Pulp

作　　者：孙媛芳[1] 谢益民[1] 高洪贵[1] 

机构地区：[1]山东轻工业学院造纸科学与技术省部共建教育部重点实验室,山东济南250353

出　　处：《纸和造纸》2009年第6期62-65,共4页Paper and Paper Making

基　　金：国家自然科学基金项目(20674046)

摘　　要：采用由Co-salen、吡啶、H2O2、O2组成的Co-salen型仿酶体系进行了针叶木CTMP浆的漂白研究,并讨论了漂白过程中纸浆卡伯值、白度和黏度的变化规律。结果表明,Co-salen仿酶漂白在溶出木素大分子方面能力并不强,主要通过将木素氧化为含羰基的产物,使其在后续碱抽提和H2O2漂白中容易降解或溶出。Unbleached softwood kraft pulp was treated with a biomimetic bleaching system, i.e. Co-salen system comprised of Co （ Ⅱ ）salen, pyridine, hydrogen peroxide, oxygen （Co-salen system） and the changes of kappa number, brightness of the pulp after biomimetic treatment were analyzed. It was found that Co-salen system had a limited ability to decrease kappa number and increase brightness. The result illustrated that the Co-salen system was not effective in lignin macromolecule. However, biomimetc process oxidized a part of lignin to be carbonyl compounds which was easy to be degraded and dissolved during alkali extraction and hydrogen peroxide bleaching. Consequently, this work provides a convictive information about Co-salen biomimetic delignification system that could be applied to industrial bleaching.

关 键 词：Co—salen仿酶 漂白 卡伯值 白度 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]