Effects of pulp pre-treatment and grinder clearance on the manufacturing characteristics of microfibrillated cellulose

被引：1

作者：

Yong, Seong Moon ^{[1
]}

Kwak, Gun Ho ^{[1
]}

Cho, Byoung-Uk ^{[1
]}

Lee, Yong Kyu ^{[1
]}

Won, Jong Myoung ^{[1
]}

机构：

[1] Dept. of Paper Science and Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon

来源：

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry | 2015年 / 47卷 / 02期

关键词：

Alkaline treatment; Clearance; Energy efficiency; Grinding; Microfibrillated cellulose; Refining; SEM; Specific energy consumption; Viscosity;

D O I：

10.7584/ktappi.2015.47.2.061

中图分类号：

学科分类号：

摘要：

A number of researches have been carried out regarding the utilization of nanocellulose(crystalline nano-cellulose, microfibrillated cellulose, nanofibrillated cellulose) for the manufacture of various kinds of composites and functional products. However, only few research works on the manufacturing characteristics of nanocellulose could be found, although some companies started already the production of nanocellulose in commercial scale. However, the most important thing in commercializing of production and utilization of nanocellulose is to develop the economical and efficient process. Thus, this study was carried out in order to investigate the effects of refining, alkaline pre-treatment and grinder clearance on the characteristics of microfibrillated cellulose and energy consumption. There was no significant differences in crystalline index with the degree of microfibrillation. The initial fibrillation could be improved by refining pre-treatment, but its effect was not observed anymore since the fibrillation was done up to certain level by grinding. Refining pre-treatment did not improved the energy efficiency. Alkaline pre-treatment can be helpful because the swelling of pulp fiber will facilitate fibrillation. It was found that the decrease in grinder clearance was helpful to improve the energy efficiency.

引用

页码：61 / 69

页数：8

共 16 条

[1]

Esau K., Anatomy of Seed Plants, (1977)

[2]

Turbak A.F., Snyder F.W., Sandberg K.R., Microfibrillated cellulose, a new cellulose product: Properties, uses and commercial potential, Proceedings of 9th Cellulose Conference, J. Appl. Polym. Sci.: Applied Polymer Symposia, 37, pp. 815-827, (1983)

[3]

Herrick F.W., Casebier R.L., Hamilton J.K., Sandberg K.R., Microfibrillated cellulose: Morphology and accessibility, J. Appl. Polym. Sci.: Appllied Polymer Symposia, 37, pp. 797-813, (1983)

[4]

Saito T., Isogai A., Ion-exchange behavior of carboxylate groups in fibrous cellulose oxidized by the TEMPO-mediated system, Carbohydrate Polymer, 61, pp. 183-190, (2005)

[5]

Saito T., Isogai A., Introduction of aldehyde groups on surfaces of native cellulose fibers by TEMPO-mediated oxidation, Colloids Surface a - Physicochem. Eng. Asp., 289, pp. 219-225, (2006)

[6]

Saito T., Isogai A., Wet strength improvement of TEMPO-oxidized cellulose sheets prepared with cationic polymers, Ind. Eng. Chem. Res., 46, pp. 773-780, (2007)

[7]

Saito T., Hirota M., Tamura N., Kimura S., Fukuzumi H., Heux L., Isogai A., Individualization of nanosized plant cellulose fibrils by direct surface carboxylation using TEMPO catalyst under neutral conditions, Biomacromolecules, 10, pp. 1992-1996, (2009)

[8]

Saito T., Kimura S., Nishiyama Y., Isogai A., Cellulose nanofibers prepared by TEMPO-mediated oxidation of native cellulose, Biomacromolecules, 8, pp. 2485-2491, (2007)

[9]

Saito T., Nishiyama Y., Putaux J.L., Vignon M., Isogai A., Homogeneous suspensions of individualized microfibrils from TEMPO-catalyzed oxidation of native cellulose, Biomacromolecules, 7, pp. 1687-1691, (2006)

[10]

Saito T., Yanagisawa M., Isogai A., TEMPO-mediated oxidation of native cellulose: Sec-MALLS analysis of water-soluble and -insoluble fractions in the oxidized products, Cellulose, 12, pp. 305-315, (2005)

← 1 2 →