中国造纸2026，Vol.45Issue(2)：60-68,9.DOI:10.11980/j.issn.0254-508X.2026.02.008
酶促协同预处理对漂白桉木浆打浆性能的影响机制研究
Effects and Mechanisms of Enzymatic Synergy on the Refining Performance of Bleached Eucalyptus Kraft Pulp
摘要
Abstract
This study used bleached eucalyptus kraft pulp(BEKP)as the raw material to systematically investigate the effects of xylanase,cellulase,and their synergistic effect at different enzyme dosages and refining conditions on fiber structure,refining efficiency,and paper strength.The aim was to elucidate the mechanisms of enzymatic systems and to optimize the refining process.The results showed that xyla-nase treatment primarily hydrolyzed surface hemicellulose of the fibers,increasing the accessibility of hydroxyl groups on the fiber surface.Consequently,the water retention value(WRV)increased from 172 g/g to 183 g/g after PFI refining,while the tensile and burst strengths of the paper exhibited only minor changes.Low-dose cellulase treatment(5 U/g)significantly increased WRV to 241 g/g by cleaving the amor-phous regions of cellulose.Comaring with tne orginal pulp,this treatment also reduced specific refining energy by 29.7%,and increased the tensile index and burst index by 12.6%and 19.1%,respectively.Synergistic enzyme treatment further increased the proportion of C—O and the O/C ratio,while decreasing the C—C fraction.This indicated an additive effect of hemicellulose hydrolysis and cellulose chain cleav-age,which promoted fiber fibrillation and swelling.When cellulase was fixed at 5 U/g and xylanase at 125 U/g,comparing with the paper that had not been treated with enzyme,the tensile index and burst in-dex increased by approximately 19.2%and 30.4%,respectively.These improvements were clearly superior to those observed with sin-gle-enzyme treatments,validating the positive effect of enzymatic synergy.关键词
酶促打浆/纤维素酶/木聚糖酶/打浆能耗/协同作用Key words
enzymatic refining/cellulase/xylanase/refining energy consumption/synergistic effect分类
轻工纺织引用本文复制引用
段林娟,吴豪,李志强,李群,张凤山,朱宏伟,刘蓉蓉..酶促协同预处理对漂白桉木浆打浆性能的影响机制研究[J].中国造纸,2026,45(2):60-68,9.基金项目
国家重点研发项目"生物造纸技术及产业示范"(2022YFC2105503). （2022YFC2105503）
