| 尹玉欣,张浩云,朱智双,张欣缘,杨嘉玮,黄六莲,李建国,陈礼辉.酶促打浆对竹浆性能的影响研究[J].中国造纸,2025,44(7):97-106 |
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| 酶促打浆对竹浆性能的影响研究 |
| Effects of Enzyme-aided Beating on Physical Properties of Bamboo Pulp |
| 投稿时间：2025-01-16 修订日期：2025-04-03 |
| DOI：10.11980/j.issn.0254-508X.2025.07.011 |
| 关键词: 竹浆 生物酶 打浆 物理强度 柔软度 |
| Key Words:bamboo pulp bio-enzyme pulp beating physical strength softness |
| 基金项目:国家重点研发计划（2023YFD2201903）；福建省引导性项目（2023H0008）；宜宾市重大攻关项目智慧竹业关键技术研究与集成示范（YBZD202401）。 |
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| 摘要:本研究以硫酸盐法竹浆为研究对象，开展打浆、结合生物酶辅助打浆研究，实现调整竹浆纤维形态结构、降低能耗和改善纸张物理性能的目的。结果表明，采用PFI磨打浆时，随着打浆转数的提高，纤维平均长度下降，其扭结和卷曲程度增加，浆料中的细小组分含量增多，纸张力学强度上升，但柔软性下降。采用生物酶预处理辅助打浆时，可以进一步调控纤维形态和结构，达到同样打浆度时，打浆电耗显著下降（在生物酶用量为40 u/g条件下，打浆度达到30 °SR时的打浆转数从1 500 r降低到1 000 r）。纤维素酶（40 u/g）预处理辅助打浆时，在打浆度30 °SR情况下，竹浆纤维的零距抗张强度3.40 kg/15 mm，纸张层间结合强度160.9 J/m2，干抗张指数15.1 N·m/g，柔软度值266 mN；半纤维素酶（40 u/g）预处理辅助打浆时，在打浆度30 °SR下，零距抗张强度3.96 kg/15 mm，层间结合强度166.4 J/m2，干抗张指数19.3 N·m/g、柔软度值361 mN。 |
| Abstract:This study focused on kraft bamboo pulp， conducting experiments on pulping and enzyme-assisted pulping to adjust the fiber morphology and structure， reduce energy consumption， and improve the physical properties of paper. The results showed that when using PFI milling for pulping， as the beating revolutions increased， the average fiber length decreased， while the degree of fiber kinking， and curling increased. The content of fine components in the slurry increased， leading to higher mechanical strength of the paper， but a decrease in softness. When using enzymatic pre-treatment to assist pulping （with an bio-enzyme dosage of 40 u/g）， the beating revolutions required to reach 30 °SR decreased from 1 500 to 1 000 r. This method further regulated fiber morphology and structure， and significantly reduced the specific energy consumption for pulping at the same beating degree. When cellulase （40 u/g） was used for pre-treatment to assist pulping， at a beating degree of 30 °SR， the zero-span tensile strength of the bamboo pulp fibers decreased by 3.40 kg/15 mm. However， the interlayer bonding strength of the paper increased to 160.9 J/m2， the dry tensile index reached 15.1 N·m/g， and the softness value was 266 mN. When hemicellulase （40 u/g） was used for pre-treatment to assist pulping， at a beating degree of 30 °SR， the zero-span tensile strength decreased by 3.96 kg/15 mm. However， the bonding strength increased to 166.4 J/m2， the dry tensile index reached 19.3 N·m/g， and the softness value was 361 mN. |
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