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 本文二维码信息
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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
收稿日期：2025-09-04  修订日期：2025-09-29
DOI：10.11980/j.issn.0254-508X.2026.02.008
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
基金项目:国家重点研发项目“生物造纸技术及产业示范”（2022YFC2105503）。
作者单位邮编
段林娟* 运城职业技术大学,文化创意与旅游学院,山西运城,044000 044000
吴豪 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室,天津,300457 300457
李志强 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室,天津,300457 300457
李群* 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室,天津,300457 300457
张凤山 山东华泰纸业股份有限公司,山东东营,257335 257335
朱宏伟 岳阳林纸股份有限公司,湖南岳阳,430600 430600
刘蓉蓉* 天津科技大学,生物基纤维材料全国重点实验室,天津市制浆造纸重点实验室,天津,300457
山东华泰纸业股份有限公司,山东东营,257335 		257335
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摘要:本研究以漂白硫酸盐桉木浆（BEKP）为原料，系统考察木聚糖酶、纤维素酶及其协同作用在不同用量和打浆条件下对纤维细胞壁结构、打浆效率及纸张强度的影响，旨在揭示酶促体系的作用规律并优化工艺。结果表明，木聚糖酶处理主要水解纤维表层半纤维素，使纤维表面可及羟基增加，从而在PFI打浆后保水值由172 g/g提升至183 g/g，同时纸张抗张和耐破强度变化较小；纤维素酶低剂量（5 U/g）处理则通过切割纤维素无定形区显著提升保水值至241 g/g，比打浆能耗相比原浆降低29.7%，抗张指数和耐破指数相比于未经酶处理的纸张分别提高12.6%和19.1%。协同酶处理进一步提高C—O比例及O/C比，同时降低了C—C占比，表明半纤维素水解与纤维素链断裂的叠加效应，有利于纤维的分丝帚化和润胀。当纤维素酶固定为5 U/g、木聚糖酶为125 U/g时，纸张抗张指数、耐破指数相比于未经酶处理的纸张分别提高19.2%和30.4%，明显优于单一酶处理效果，验证了酶协同优化的作用。
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 xylanase 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 amorphous 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 cleavage， 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 index increased by approximately 19.2% and 30.4%， respectively. These improvements were clearly superior to those observed with single-enzyme treatments， validating the positive effect of enzymatic synergy.
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