Journal
CURRENT ORGANIC CHEMISTRY
Volume 16, Issue 16, Pages 1871-1875Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/138527212802651197
Keywords
Cross flow ultra-filtration; Endoglucanase pretreatment; Microfibrillated cellulose; Nanocellulose; Nanopulping; TEMPO pretreatment
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Funding
- Jakob Wallenberg Research foundation [V-2010-0126]
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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.
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