A Novel Nano Cellulose Preparation Method and Size Fraction by Cross Flow Ultra- Filtration

Author(s): Hongli Zhu, Mikaela Helander, Carl Moser, Adam Ståhlkranz, Daniel Söderberg, Gunnar Henriksson, Mikael Lindström.

Journal Name: Current Organic Chemistry

Volume 16 , Issue 16 , 2012

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A novel energy-efficient method called nanopulping (patent pending) to produce nanocellulose from chemical pulp, and a novel cross-flow ultra-filtration method to separate nanofibrils fractions of different size were applied in this study. Pretreatment with endoglucanase or 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidation seems to enhance the nanopulping process. Results were evaluated with atomic force microscope and ultrafiltration. The nanopulping produced a relatively inhomogeneous material with larger particles/ fibers in addition to nanofibers. However, by ultrafiltration of the material it was possible to obtain more homogeneous material in different dimensions with methods industrially acceptable.

Keywords: Cross flow ultra-filtration, Endoglucanase pretreatment, Microfibrillated cellulose, Nanocellulose, Nanopulping, TEMPO pretreatment.

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Article Details

Year: 2012
Page: [1871 - 1875]
Pages: 5
DOI: 10.2174/138527212802651197
Price: $58

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