Issue 44, 2022

Spatioselective surface chemistry for the production of functional and chemically anisotropic nanocellulose colloids

Abstract

Maximizing the benefits of nanomaterials from biomass requires unique considerations associated with their native chemical and physical structure. Both cellulose nanofibrils and nanocrystals are extracted from cellulose fibers via a top–down approach and have significantly advanced materials chemistry and set new benchmarks in the last decade. One major challenge has been to prepare defined and selectively modified nanocelluloses, which would, e.g., allow optimal particle interactions and thereby further improve the properties of processed materials. At the molecular and crystallite level, the surface of nanocelluloses offers an alternating chemical structure and functional groups of different reactivity, enabling straightforward avenues towards chemically anisotropic and molecularly patterned nanoparticles via spatioselective chemical modification. In this review, we will explain the influence and role of the multiscale hierarchy of cellulose fibers in chemical modifications, and critically discuss recent advances in selective surface chemistry of nanocelluloses. Finally, we will demonstrate the potential of those chemically anisotropic nanocelluloses in materials science and discuss challenges and opportunities in this field.

Graphical abstract: Spatioselective surface chemistry for the production of functional and chemically anisotropic nanocellulose colloids

Article information

Article type
Review Article
Submitted
01 7 2022
Accepted
27 9 2022
First published
03 11 2022
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2022,10, 23413-23432

Spatioselective surface chemistry for the production of functional and chemically anisotropic nanocellulose colloids

K. Heise, T. Koso, A. W. T. King, T. Nypelö, P. Penttilä, B. L. Tardy and M. Beaumont, J. Mater. Chem. A, 2022, 10, 23413 DOI: 10.1039/D2TA05277F

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