漆酶-TEMPO体系选择性氧化对漂白硫酸盐浆纤维形态及成纸性能的影响  

Effect of Laccase-TEMPO System Selective Oxidation on Bleached Kraft Pulp Fiber-Morphology and Paper Properties

作　　者：谢益民[1,2] 杨静[1] 王晨晨[1] 王鹏[1,2] 

机构地区：[1]湖北工业大学制浆造纸工程学院,湖北武汉430068 [2]湖北工业大学绿色轻工材料湖北省重点实验室,湖北武汉430068

出　　处：《纸和造纸》2015年第4期18-22,共5页Paper and Paper Making

基　　金：国家自然科学基金(31300494;31370574);湖北省教育厅青年人才项目(Q20131402);湖北工业大学博士启动金项目(BSQD12037);绿色轻工材料湖北省重点实验室开放基金[省重点实验室科(2013)2号-面上]

摘　　要：采用漆酶-TEMPO体系对漂白硫酸盐浆进行氧化处理,分析了漆酶-TEMPO体系对纸浆纤维表面羧基含量、醛基含量、纤维形态以及成纸性能的影响,利用扫描电镜和红外光谱分析了纤维的结构变化。研究结果表明:纸浆经过漆酶-TEMPO体系氧化后,羧基含量和醛基含量都有所增加,醛基含量增加更为明显;纤维的长度、宽度没有明显变化,而纤维的粗度下降;氧化处理能够增加纸张的干抗张强度、湿抗张强度、环压强度和耐破度,尤其湿抗张强度提高较大,从1.34 N·m·g-1增加到2.23 N·m·g-1;氧化后纸浆纤维表面变得粗糙,纤维间结合力增加。Bleached kraft pulp was oxidized by laccase-TEMPO system. The effect oflaccase-TEMPO system on carboxyl group and aldehyde group content, morphology of oxidized pulp and paper properties were investigated, and structural changes of fiber was also analysed with SEM and FT-IR. It was found that carboxyl group and aldehyde group content of pulp fiber were increased through oxidation of laccase-TEMPO system, respectively, the increase of aldehyde group content was very obvious. The length and width of fiber had not significant change. However, the coarseness of fiber decreased slightly. The oxidation treatment of pulp with laccase-TEMPO system could increase dry strength, wet strength, ring crush strength and burst strength, especially, wet strength was increased obviously which was increased from 1.34 N＇m＇g-1 to 2.23 N＇m＇g-1. The surface of fiber became rough and interfiber bonding was enhanced after oxidative treatment of fiber.

关 键 词：漆酶-TEMPO体系 漂白硫酸盐浆 氧化 纤维形态 成纸性能 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]