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| 纤维素酶处理改善生活用纸柔软度等性能的研究 |
| Study on Cellulase Treatment for Improving the Softness and Other Properties of Tissue Paper |
| 收稿日期：2019-12-23 |
| DOI：10.11980/j.issn.0254-508X.2020.03.007 |
| 关键词: 纤维素酶处理 生活用纸 柔软度 保水值 抗张强度 |
| Key Words:cellulase treatment tissue paper softness water retention value (WRV) tensile strength |
| 基金项目:天津市自然科学基金（19JCQNJC05400）；校企合作项目（PM3擦手纸的开发与生产）。 |
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| 摘要:采用纤维素酶处理纸浆纤维来改善纸浆手抄片柔软度并对其改善机理进行了探究。结果表明，纤维素酶处理纸浆提高了单根纤维的柔软度指数，进而改善了纸浆手抄片的柔软度。扫描电子显微镜和纸浆纤维保水值分析结果也表明，纤维素酶处理纸浆纤维能够改善纤维表面分丝帚化程度和亲水性能。当加入10 EGU/g的纤维素酶时，针叶木浆、阔叶木浆及其配抄木浆（30%针叶木浆+70%阔叶木浆）手抄片的TS7值分别较未处理纸浆提高了35.5、18.0、25.2个单位。当纤维素酶用量从0增加到10 EGU/g时，针叶木浆和阔叶木浆的保水值分别增长了3.8%和5.0%。但经纤维素酶处理后，手抄片的抗张强度有先上升后下降的趋势。 |
| Abstract:Cellulase treatment of pulp fibers was applied to improve the softness of handsheets and the corresponding mechanism was also exproled in this study. It was found that cellulase treatment could increase the flexibility index of single pulp fiber and then improve the softness of handsheets. SEM observation and water retention value results also showed that cellulase treatment can improve the surface fibrillation and hydrophilicity of pulp fibers. In addition, the softness of handsheets made of softwood, hardwood and the mixed pulps could be improved by 35.5, 18.0 and 25.2 units, respectively, when cellulase dosage was 10 EGU/g. Meanwhile, the water retention value of softwood pulp and hardwood pulp were increased by 3.8% and 5.0%, respectively compared with the control when 10 EGU/g of cellulase was added. However, the tensile strength of tissue handsheets increased first then decreased slightly along with the cellulase treatment compared to the control. |
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