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

Marco Beaumont*, Blaise L. Tardy, Guillermo Reyes, Tetyana V. Koso, Elisabeth Schaubmayr, Paul Jusner, Alistair W.T. King, Raymond R. Dagastine, Antje Potthast, Orlando J. Rojas*, Thomas Rosenau*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

5 Sitaatiot (Scopus)
22 Lataukset (Pure)

Abstrakti

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.

AlkuperäiskieliEnglanti
Sivut17040–17046
Sivumäärä7
JulkaisuJournal of the American Chemical Society
Vuosikerta143
Numero41
Varhainen verkossa julkaisun päivämäärä7 lokak. 2021
DOI - pysyväislinkit
TilaJulkaistu - 20 lokak. 2021
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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