Assembling Native Elementary Cellulose Nanofibrils via a Reversible and Regioselective Surface Functionalization

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Beaumont , M , Tardy , B , Reyes , G , Koso , T , Schaubmayr , E , Jusner , P , King , A , Dagastine , R , Potthast , A , Rojas , O J & Rosenau , T 2021 , ' Assembling Native Elementary Cellulose Nanofibrils via a Reversible and Regioselective Surface Functionalization ' , Journal of the American Chemical Society , vol. 143 , no. 41 , pp. 17040-17046 . https://doi.org/10.1021/jacs.1c06502

Title: Assembling Native Elementary Cellulose Nanofibrils via a Reversible and Regioselective Surface Functionalization
Author: Beaumont, Marco; Tardy, Blaise; Reyes, Guillermo; Koso, Tetyana; Schaubmayr, Elisabeth; Jusner, Paul; King, Alistair; Dagastine, Raymond; Potthast, Antje; Rojas, Orlando J.; Rosenau, Thomas
Contributor organization: Department of Chemistry
Date: 2021-10-20
Language: eng
Number of pages: 7
Belongs to series: Journal of the American Chemical Society
ISSN: 0002-7863
DOI: https://doi.org/10.1021/jacs.1c06502
URI: http://hdl.handle.net/10138/335951
Abstract: Selective surface modification of biobased fibers affords effective individualization and functionalization into nanomaterials, as exemplified by the TEMPO-mediated oxidation. However, such a route leads to changes of the native surface chemistry, affecting interparticle interactions and limiting the development of potential supermaterials. Here we introduce a methodology to extract elementary cellulose fibrils by treatment of biomass with N-succinylimidazole, achieving regioselective surface modification of C6-OH, which can be reverted using mild post-treatments. No polymer degradation, cross-linking, nor changes in crystallinity occur under the mild processing conditions, yielding cellulose nanofibrils bearing carboxyl moieties, which can be removed by saponification. The latter offers a significant opportunity in the reconstitution of the chemical and structural interfaces associated with the native states. Consequently, 3D structuring of native elementary cellulose nanofibrils is made possible with the same supramolecular features as the biosynthesized fibers, which is required to unlock the full potential of cellulose as a sustainable building block.
Subject: 116 Chemical sciences
ELASTIC-MODULUS
OXIDATION
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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