Abstract
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.
Current Organic Chemistry
Title:A Novel Nano Cellulose Preparation Method and Size Fraction by Cross Flow Ultra- Filtration
Volume: 16 Issue: 16
Author(s): Hongli Zhu, Mikaela Helander, Carl Moser, Adam Ståhlkranz, Daniel Söderberg, Gunnar Henriksson and Mikael Lindström
Affiliation:
Keywords: Cross flow ultra-filtration, Endoglucanase pretreatment, Microfibrillated cellulose, Nanocellulose, Nanopulping, TEMPO pretreatment.
Abstract: 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.
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Cite this article as:
Zhu Hongli, Helander Mikaela, Moser Carl, Ståhlkranz Adam, Söderberg Daniel, Henriksson Gunnar and Lindström Mikael, A Novel Nano Cellulose Preparation Method and Size Fraction by Cross Flow Ultra- Filtration, Current Organic Chemistry 2012; 16 (16) . https://dx.doi.org/10.2174/138527212802651197
DOI https://dx.doi.org/10.2174/138527212802651197 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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