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

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 o

SUBMITTER: Beaumont M 

PROVIDER: S-EPMC8532154 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature