草酸用于硫酸盐竹浆臭氧漂前预处理的效果研究  

Eeffect of Oxalic Acid Pretreatment on Ozone Bleaching of Bamboo Kraft Pulp

作　　者：李哲[1] 刘明友[1] 张清红 金艳羽 

机构地区：[1]华南理工大学造纸与污染控制国家工程研究中心,广东广州510640

出　　处：《造纸科学与技术》2014年第6期31-33,共3页Paper Science & Technology

基　　金：国家自然科学基金资助项目(D8110801)

摘　　要：采用草酸对氧脱木素后的硫酸盐竹浆臭氧漂白前进行预处理,并与甲酸、DTPA、硫酸镁、DMSO、乙二醇等预处理剂在适宜条件下的预处理效果进行了比较。结果表明:草酸用于臭氧漂白前浆料预处理时,可以有效提高臭氧的漂白效果,预处理后浆料白度比未预处理浆料的白度提高5%ISO,黏度提高了69 m L/g,最佳预处理的条件为:草酸用量1.5%,反应温度60℃,时间30min。This paper investigated the optimal condition of oxalic pretreatment on ozone bleaching of bamboo kraft pulp, the effect of oxalic acid pretreatment was compared with formic acid, DTPA, EDTA , ethylene glycol etc pretreatment at the optimal condition of pretreatment. The results showed that oxalic pretreatment before ozone bleaching could increase the efficiency of ozone bleaching, the brightness of pulp rose 5% ISO,the viscosity of pulp increased 69mL/g. Optimal conditions of oxalic acid pretreatment were as follows ： oxalic charge 1. 5% , tempera- ture 60℃, time 30min.

关 键 词：草酸 臭氧漂白 白度 黏度 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]