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

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Journal Title
Journal ISSN
Volume Title
A2 Katsausartikkeli tieteellisessä aikakauslehdessä
Date
2022-11-28
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Language
en
Pages
20
23413-23432
Series
Journal of Materials Chemistry A, Volume 10, issue 44
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.
Description
Funding Information: K. H. and P. P. gratefully acknowledge the funding received from the Academy of Finland, grant numbers 333905 and 338804, respectively. This research was funded in whole, or in part, by the Austrian Science Fund (FWF) (J4356). For the purpose of open access, the author has applied a CC BY public copyright license to any Author Accepted Manuscript version arising from this submission. T. K. & A. K. would like to acknowledge the Academy of Finland for funding under the project “WTF-Click-Nano” (Project #311255). Publisher Copyright: © 2022 The Royal Society of Chemistry.
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Citation
Heise, K, Koso, T, King, A W T, Nypelö, T, Penttilä, P, Tardy, B L & Beaumont, M 2022, ' Spatioselective surface chemistry for the production of functional and chemically anisotropic nanocellulose colloids ', Journal of Materials Chemistry A, vol. 10, no. 44, pp. 23413-23432 . https://doi.org/10.1039/d2ta05277f