大连工业大学学报2017，Vol.36Issue(3)：175-179,5.
TEMPO氧化浆的返黄特性
The yellowing property of TEMPO-oxidized pulp
摘要
Abstract
The bleached pine pulp was selectively oxidized by TEMPO/NaClO/NaBr oxidation system to obtain pulp with various amount of carboxyl and carbonyl groups.The oxidized pulps were treated by HCl, NaBH4 and NaClO2 to remove Na+ and reduce carbonyl groups, respectively.The yellowing properties of various oxidized pulps were also explored.The results showed that the content of carboxyl increased with the NaClO dosage gradually, while the content of carbonyl increased at first and then decreased, and the total amount of carboxyl and carbonyl groups remained constant.Compared with unoxidized pulp,the yellowing properties of oxidized pulps induced by thermal aging were more serious than that induced by light aging, indicating that the carbonyl groups are the most important factors to influence the yellowing of oxidized pulp induced by thermal aging, but the factors of oxidized pulp yellowing induced by light aging was decided by total amount of carboxyl and carbonyl groups.The removal of Na+ and decrease of carbonyl content could reduce the yellowing of TEMPO-oxidized pulp effectively.关键词
TEMPO氧化浆/羰基/羧基/返黄Key words
TEMPO-oxidized pulp/carbonyl/carboxyl/yellowing分类
轻工纺织引用本文复制引用
陈港,张宝军,方志强,林东瀚..TEMPO氧化浆的返黄特性[J].大连工业大学学报,2017,36(3):175-179,5.基金项目
国家重点基础研究发展计划(973计划)项目(2010CB732206). （973计划）
