Journal
CELLULOSE
Volume 21, Issue 4, Pages 2579-2585Publisher
SPRINGER
DOI: 10.1007/s10570-014-0315-2
Keywords
Nanocrystalline cellulose; Microcrystalline cellulose; Microwave-assisted hydrolysis; XRD diffraction; Dynamic light-scattering (DLS); Scanning transmission electron microscopy (STEM)
Funding
- Slovenian Research Agency [P2-0145]
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In this work we report on the procedure for fast and controlled preparation of nanocrystalline cellulose (NCC) from commercially available microcrystalline cellulose using microwave-assisted hydrolysis. By varying the sulfuric acid concentration and hydrolysis temperature, an average hydrodynamic diameter of NCC between 126 and 1,310 nm with corresponding yields between 16 and 82 %, respectively, was obtained in a very short reaction time of 10 min. An additional advantage of the described procedure is its high reproducibility and ability to fine-tune the average NCC particle size by adjusting the reaction conditions, i.e., the sulfuric acid concentration and/or reaction temperature.
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