内切葡聚糖酶预处理对漂白针叶木浆打浆性能的影响  

Effect of endoglucanases pretreatment on bleached softwood pulp refining

作　　者：杜敏 李新平 王志杰 朱晶航 DU Min;LI Xin ping;WANG Zhi jie;ZHU Jing hang(College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology,Xi'An 710021, China)

机构地区：[1]陕西科技大学轻工科学与工程学院陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021

出　　处：《陕西科技大学学报》2017年第6期6-9,19,共5页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(31370578);陕西省科技厅自然科学基础研究计划项目(2015JM3083);陕西省教育厅专项科研计划项目(15JK1070)

摘　　要：采用内切葡聚糖酶对漂白针叶木浆进行预处理,通过分析酶预处理后浆料在不同打浆转数下游离度、纤维形态以及成纸物理性能的变化,研究内切葡聚糖酶预处理对漂白针叶木浆打浆性能的影响.结果表明:在相同打浆转数下,随着酶用量的增加,浆料游离度逐渐降低,并且随着打浆转数的增加,酶预处理后浆料游离度下降幅度逐渐增加.酶预处理后浆料在打浆过程中发生更多的切断作用,纤维平均长度明显下降,且酶用量越大,长度下降幅度越大.当酶用量低于0.1U/g时,在相同的浆料游离度下,酶预处理前后成纸松厚度基本保持不变,抗张指数有明显增加,内结合强度变化不明显.酶预处理不利于成纸透气度的提高.Endoglucanases was used to pre treat bleached softwood pulp.In the present study,by measuring the freeness of pulp,fiber morphology and the paper performance in different refining revolutions,the effects of enzymatic pretreatment on pulp refining were studied.The results showed that:in same refining revolution,with the enzyme dosage increasing,the pulp freeness decreased gradually.After enzymatic pretreatment,the pulp had more cutting action in the refining process,the average fiber length after refining decreased significantly,larger the dosage,greater the decrease.When the enzyme dosage was lower than0.1U/g,the thickness and the binding strength of the paper sheet were almost same to the control sample,but the tensile index was significantly increased.Enzyme pretreatment was not conducive to the improvement of the air permeability of the paper sheet.

关 键 词：内切葡聚糖酶 漂白针叶木浆 打浆 游离度 抗张指数 

分 类 号：TQ353[化学工程]