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| Study on Cellulase Treatment for Improving the Softness and Other Properties of Tissue Paper |
| Received:December 23, 2019 |
| DOI：10.11980/j.issn.0254-508X.2020.03.007 |
| Key Words:cellulase treatment tissue paper softness water retention value (WRV) tensile strength |
| Fund Project: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）。 |
| Author Name | Affiliation | Postcode | | ZHANG Fangdong | Tianjin Key Lab of Pulp and Paper, College of Papermaking Science and Technology, Tianjin University of Science and Technology,Tianjin,300457 | 300457 | | CAO Haibing | Zhejiang Jing Xing Paper Co., Ltd., Pinghu,Zhejiang Province,314214 | 314214 | | LIU Jing | Tianjin Key Lab of Pulp and Paper, College of Papermaking Science and Technology, Tianjin University of Science and Technology,Tianjin,300457 | 300457 | | LIU Liqin | Tianjin Key Lab of Pulp and Paper, College of Papermaking Science and Technology, Tianjin University of Science and Technology,Tianjin,300457 | 300457 | | AN Xingye | Tianjin Key Lab of Pulp and Paper, College of Papermaking Science and Technology, Tianjin University of Science and Technology,Tianjin,300457 | 300457 | | LU Bin | Zhejiang Jing Xing Paper Co., Ltd., Pinghu,Zhejiang Province,314214 | 314214 | | LIU Hongbin | Tianjin Key Lab of Pulp and Paper, College of Papermaking Science and Technology, Tianjin University of Science and Technology,Tianjin,300457 | 300457 |
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| 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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