Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals

Nigmatullin, Rinat, Harniman, Robert, Gabrielli, Valeria, Muñoz-García, Juan C, Khimyak, Yaroslav Z, Angulo, Jesús and Eichhorn, Stephen J (2018) Mechanically Robust Gels Formed from Hydrophobized Cellulose Nanocrystals. ACS Applied Materials & Interfaces, 10 (23). 19318–19322. ISSN 1944-8244

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Abstract

Cellulose nanocrystals (CNCs) that bind to each other through associative hydrophobic interactions have been synthesized by modifying sulfated CNCs (sCNCs) with hydrophobic moieties. These octyl-CNCs form gels at significantly lower concentrations than parent sCNCs, producing extremely strong hydrogels. Unlike sCNCs, these octyl-CNCs do not form ordered liquid crystalline phases indicating a random association into a robust network driven by hydrophobic interactions. Furthermore, involvement of the octyl-CNCs into multicomponent supramolecular assembly was demonstrated in combination with starch. AFM studies confirm favorable interactions between starch and octyl-CNCs, which is thought to be the source of the dramatic increase in gel strength.

Item Type: Article
Uncontrolled Keywords: adhesive force,cellulose nanocrystals (cncs),gels,rheology,starch
Faculty \ School: Faculty of Science > School of Pharmacy
Depositing User: Pure Connector
Date Deposited: 29 May 2018 16:30
Last Modified: 22 Jul 2020 02:17
URI: https://ueaeprints.uea.ac.uk/id/eprint/67234
DOI: 10.1021/acsami.8b05067

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