林产化学与工业2015，Vol.35Issue(6)：113-118,6.DOI:10.3969/j.issn.0253-2417.2015.06.019
纤维素酶和半纤维素酶改性对漂白针叶木浆性能的影响
Influence of Cellulase and Hemicellulase Modification on Pulp Performance of Bleached Softwood Fiber
摘要
Abstract
Complex cellulase,endo-cellulase and xylanase were applied to modify bleached softwood fiber ( BSF) . The influences of three enzymes on the performance of pulp were investigated. The results indicated that complex cellulase had the biggest influence on the performance of BSF among three enzymes. With the dosage of complex cellulase increasing,the pulp drainability first increased and then decreased. Both of water retention value ( WRV) and the absolute value of Zeta potential decreased first and then increased. The hydrophilic of fiber surface reduced;the fiber length declined sharply;and the tensile index of hand-sheet increased first and then declined sharply. In the dosage of 5.0 U/g,compared with the sample without modification, the average fiber length was declined by 48. 64%, and the tensile index of hand-sheet decreased by 23. 23%. The effects of endo-cellulase and xylanase on the pulp were relatively small. After modification by these two enzymes,both of WRV and the absolute value of Zeta potential decreased gradually, but the hydrophilic of fiber surface and the tensile index of hand-sheet increased slowly. Endo-cellulase had the best modification effect for the paper industry. When the dosage of endo-cellulase was 5. 0 U/g,the hydrophilic of fiber surface increased. It was beneficial for fiber refining and the tensile index of hand-sheet increased to 22. 04 N·m/g by 20. 77% compared with the sample without modification.关键词
酶改性/漂白针叶木纤维/滤水性/保水值/亲水性Key words
enzymatic modification/bleached softwood fiber/filtration/WRV/hydrophilic分类
化学化工引用本文复制引用
杜敏,李新平,陈立红,王志杰,李鸿魁..纤维素酶和半纤维素酶改性对漂白针叶木浆性能的影响[J].林产化学与工业,2015,35(6):113-118,6.基金项目
国家自然科学基金面上项目(31370578) （31370578）
陕西省科技厅自然科学基础研究项目(2014JZ013) （2014JZ013）
陕西科技大学科研启动基金项目(BJ13-21) （BJ13-21）
