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| Effect of Enzymatic Pretreatment of BSKP on Its Refining and Paper Properties |
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| DOI：10.11981/j.issn.1000-6842.2015.02.22 |
| Key Words:cellulase；bleached softwood kraft pulp；pretreatment；refining；paper properties |
| Fund Project:国家自然科学基金面上项目(31370578)；陕西省科技厅省级重点实验室项目(2011HBSZS014)；陕西省科技厅自然科学基础研究项目(2014JZ013)；陕西科技大学博士启动基金项目(BJ13-21)。 |
| Author Name | Affiliation | | 杜 敏1 | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室, 陕西西安, 710021 | | 李新平1 | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室, 陕西西安, 710021 | | 陈立红2 | 2.陕西科技大学化学与化工学院, 陕西西安, 710021 | | 王志杰1 | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室, 陕西西安, 710021 | | 李鸿魁1 | 1.陕西科技大学轻工与能源学院,陕西省造纸技术及特种纸品开发重点实验室, 陕西西安, 710021 |
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| Abstract: |
| A cellulase was used to pre-treat bleached softwood kraft pulp (BSKP) in present study, the changes of fiber morphology,freeness of pulp in refining and paper properties were investigated,and the effects of enzymatic pretreatment on refining and paper properties were studied.The results showed that when the BSKP was pre-treated by the cellulase, fiber surface was of hairiness, fiber length decreased, and the fines content increased, which was similar to the effect of refining. When enzymatic pre-treated BSKP refined at PFI mill for 5000 r or 10000 r, the pulp freeness decreased with the enzyme dosage increasing. Enzymatic pretreatment could save refining energy significantly, but the pretreated fibers were easier to be cut in refining. Appropriate enzymatic pretreatment and refining could increase the physical strength of the paper. Comparing to the control samples, the paper tensile index improved by 54.6%, 60.3% and 48.5% when the pulps were pre-treated with enzyme dosage of 0.01 U/g and the pulps were refined for 500 r, 2000 r, and 5000 r in PFI mill respectively. |
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