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The apparent structural hydrophobicity of cellulose nanocrystals

Charles Bruel, Quentin Beuguel, Jason Robert Tavares, Pierre J. Carreau and Marie-Claude Heuzey

Article (2018)

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Cite this document: Bruel, C., Beuguel, Q., Tavares, J. R., Carreau, P. J. & Heuzey, M.-C. (2018). The apparent structural hydrophobicity of cellulose nanocrystals. J-FOR The Journal of Science and Technology for Forest Products and Processes, 7(4), p. 13-23. Retrieved from http://www.paptac.ca/fr/component/docman/doc_downl...
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Abstract

The Teas graph of wood-based sulfuric acid-hydrolyzed cellulose nanocrystals (CNCs) was plotted based on sedimentation tests in a set of 25 common solvents. Comparisons with those of sucrose and dextran, taken as equivalents for cellobiose (cellulose repeating unit) and amorphous cellulose, respectively, highlighted the amphiphilic nature of CNCs. In the absence of any chemical arguments, the hydrophobic behavior displayed is thought to be caused by the exposition of (200) lattice planes at the CNC surface. This apparent structural hydrophobicity may be exploited to achieve the dispersion of CNCs in some mildly-non polar matrices such as poly(ethylene glycol) and poly(lactic acid). The Teas graph is a useful tool to predict the dispersibility potential of CNCs and to select a proper solvent for nanocomposite preparation

Uncontrolled Keywords

Biomaterials; Nanocomposites; Cellulose nanocrystals; Hansen solubility parameters; Teas graph.

Open Access document in PolyPublie
Subjects: 1800 Génie chimique > 1800 Génie chimique
Department: Département de génie chimique
Research Center: CREPEC - Centre de recherche sur les systèmes polymères et composites à haute performance
Funders: Celluforce, FPInnovations, PRIMA Québec, CRSNG / NSERC, Fond de Recherche du Québec – Nature et Technologies (FRQNT)
Date Deposited: 16 Jan 2020 10:55
Last Modified: 17 Jan 2020 01:20
PolyPublie URL: https://publications.polymtl.ca/4126/
Document issued by the official publisher
Journal Title: J-FOR The Journal of Science and Technology for Forest Products and Processes (vol. 7, no. 4)
Publisher: PAPTAC (Pulp & Paper Technical Association of Canada)
Official URL: http://www.paptac.ca/fr/component/docman/doc_downl...

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