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| Effects of Enzyme-aided Beating on Physical Properties of Bamboo Pulp |
| Received:January 16, 2025 Revised:April 03, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.07.011 |
| Key Words:bamboo pulp bio-enzyme pulp beating physical strength softness |
| Fund Project: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）。 |
| Author Name | Affiliation | Postcode | | YIN Yuxin* | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | ZHANG Haoyun | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | ZHU Zhishuang | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | ZHANG Xinyuan | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | YANG Jiawei | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | HUANG Liulian | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | LI Jianguo* | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 | | CHEN Lihui* | College of Materials Engineering, National Forestry & Grassl and Administration Key Lab for Plant Fiber Functional Materials, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350108 | 350108 |
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| 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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