Emerging Nanocellulose Technologies: Recent Developments.

Advanced Materials
Akira Isogai

Abstract

Nanocelluloses have unique morphologies, characteristics, and surface nanostructures, and are prepared from abundant and renewable plant biomass resources. Therefore, expansion of the use of CO2 -accumulating nanocelluloses is expected to partly contribute to the establishment of a sustainable society and help overcome current global environmental issues. Nanocelluloses can be categorized into cellulose nanonetworks, cellulose nanofibrils, and cellulose nanocrystals, depending on their morphologies. All of these materials are first obtained as aqueous dispersions. In particular, cellulose nanofibrils have homogeneous ≈3 nm widths and average lengths of >500 nm, and significant amounts of charged groups are present on their surfaces. Such charged groups are formed by carboxymethylation, C6-carboxylation, phosphorylation, phosphite esterification, xanthation, sulfate esterification, and C2/C3 dicarboxylation during the pretreatment of plant cellulose fibers before their conversion into cellulose nanofibrils via mechanical disintegration in water. These surface-charged groups in nanocelluloses can be stoichiometrically counterion-exchanged into diverse metal and alkylammonium ions, resulting in surface-modified nanocelluloses with...Continue Reading

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Citations

Nov 18, 2020·Macromolecular Rapid Communications·Ruochun WangXiaofeng Sui
Mar 3, 2021·International Journal of Biological Macromolecules·Ferran Serra-PararedaMarc Delgado-Aguilar
Mar 2, 2021·ACS Omega·Suprakas Sinha Ray, Austine Ofondu Chinomso Iroegbu
May 14, 2021·Scientific Reports·Bunshi FugetsuMorinobu Endo
May 11, 2021·International Journal of Biological Macromolecules·Farzad SeidiMasoud Mozafari
Aug 9, 2021·Carbohydrate Polymers·Pejman HeidarianAbbas Z Kouzani

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