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  Structure selectivity of universal alkaline periodate oxidation on lignocellulose for facile isolation of cellulose nanocrystals.

Liu, P., Pang, B., Dechert, S., Zhang, X., Andreas, L., Fischer, S., et al. (2020). Structure selectivity of universal alkaline periodate oxidation on lignocellulose for facile isolation of cellulose nanocrystals. Angewandte Chemie International Edition, 59(8), 3218-3225. doi:10.1002/anie.201912053.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-4522-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-C8CA-6
Genre: Journal Article

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 Creators:
Liu, P., Author
Pang, B., Author
Dechert, S., Author
Zhang, X.1, Author              
Andreas, L.2, Author              
Fischer, S., Author
Meyer, F., Author
Zhang, K., Author
Affiliations:
1Department of NMR Based Structural Biology, MPI for Biophysical Chemistry, Max Planck Society, ou_578567              
2Research Group of Solid State NMR Spectroscopy-2, MPI for Biophysical Chemistry, Max Planck Society, ou_2396693              

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Free keywords: cellulose nanocrystals; dimeric orthoperiodate; periodate oxidation; recyclable; selectivity
 Abstract: In this work, we report for the first time the alkaline periodate oxidation on lignocelluloses for the selective isolation of cellulose nanocrystals (CNCs). With the high concentrations as potassium salt at pH 10, periodate ions predominantly exist as dimeric orthoperiodate ions (H2I2O104-). With reduced oxidizing activity in alkaline solutions, dimeric orthoperiodate ions preferentially oxidized non-ordered cellulose regions. The alkaline surroundings promoted the degradation of these oxidized cellulose chains via β-alkoxy fragmentation and generated CNCs. Obtained CNCs were uniform and generally contain carboxyl groups. Furthermore, the reaction solution could be conveniently reused after the regeneration of periodate with ozone gas. This method allowed us to directly produce CNCs from diverse sources, in particular lignocellulosic raw materials including sawdust (European beech and Scots pine), flax and kenaf in addition to microcrystalline cellulose and pulp.

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Language(s): eng - English
 Dates: 2019-11-062020-02-17
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1002/anie.201912053
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Title: Angewandte Chemie International Edition
Source Genre: Journal
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Pages: - Volume / Issue: 59 (8) Sequence Number: - Start / End Page: 3218 - 3225 Identifier: -