Improved Reactivity of Bamboo Dissolving Pulp for the Viscose Process: Post-Treatment with Beating

被引：0

作者：

机构：

[1] Key Lab of Paper Science and Technology of Ministry of Education, Qilu University of Technology, Ji'nan

来源：

Wu, Chaojun | 1600年 / North Carolina State University卷 / 09期

关键词：

Bamboo dissolving pulp; Beating; Canadian standard freeness; Reactivity;

D O I：

10.15376/biores.9.2.3449-3455

中图分类号：

学科分类号：

摘要：

Chemical and enzymatic modifications intended to improve the reactivity of dissolving pulp rapidly decrease its yield. In this study, a beating posttreatment intended to increase the reactivity of bamboo dissolving pulp was investigated. Beating post-treatment can create microfibrils on the surface of fibers. The reactivity of unrefined bamboo dissolving pulp prepared via pre-hydrolysis and a subsequent kraft cooking and Op-H-P (oxygen delignification enhanced with H2O2 and sodium hypochlorite) bleaching process was very low. The reactivity increased drastically as the Canadian standard freeness (CSF) of the bamboo dissolving pulp was decreased (i.e., the degree of beating increased). The CSF decreased to 236 mL from its original, higher freeness. The average fiber width was larger and the curling and kink indexes were lower in the pulp of CSF 236 mL compared to those of pulps with greater freeness. However, there was little impact of beating on the crystallinity index of bamboo dissolving pulp. © 2014. All Rights Reserved.

引用

页码：3449 / 3455

页数：6

共 20 条

[1]

Abad S., Santos V., Parajo J. C., Formic acid-peroxyformic acid pulping of aspen wood: An optimization study, Holzforschung, 54, 5, pp. 544-552, (2000)

[2]

Borrega M., Tolonen L. K., Bardot F., Testova L., Sixta H., Potential of hot water extraction of birch wood to produce high-purity dissolving pulp after alkaline pulping, Bioresource Technology, 135, pp. 665-671, (2013)

[3]

Chen J. C., Yang G. H., An Introduction to Cotton Linter Pulping, (2011)

[4]

Christov L. P., Prior B. A., Xylan removal from dissolving pulp using enzymes of Aureobasidium pullulans, Biotechnology Letters, 15, 12, pp. 1269-1274, (1993)

[5]

Christov L. P., Prior B. A., Role of hydrolysis conditions in the enzyme-mediated release of reducing sugars from sulphite pulp, Biotechnology Letters, 17, 8, pp. 821-826, (1995)

[6]

Christov L. P., Szakacs G., Rele M. V., Balakrishnan H., Screening of cellulase-free fungal xylanases and evaluation of their performance on sulfite dissolving pulp, Biotechnology Techniques, 13, 5, pp. 313-316, (1999)

[7]

Fischer K., Rennert S., Wilke M., Goldberg W., Possibilities of enhancement of reactivity of dissolving pulps, Acta Polymerica, 41, 5, pp. 279-284, (1990)

[8]

Gehmayr V., Schild G., Sixta H., A precise study on the feasibility of enzyme treatments of a kraft pulp for viscose application, Cellulose, 18, 2, pp. 479-491, (2011)

[9]

Gubitz G. M., Stebbing D., Saddler J. N., Lischnig T., Enzymatic removal of hemicellulose from dissolving pulps, Biotechnology Letters, 19, 5, pp. 491-495, (1997)

[10]

Helmy S. A., State M. A., Viscose pulps from Egyptian bagasse with high chemical reactivity, Holzforschung, 45, 6, pp. 433-436, (1991)

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