Journal of Colloid and Interface Science 516 (2018) 23–33 Contents lists available at ScienceDirect Journal of Colloid and Interface Science journal homepage: www.elsevier.com/locate/jcis Regular Article Ultrasonication of spray- and freeze-dried cellulose nanocrystals in water Quentin Beuguel, Jason R. Tavares, Pierre J. Carreau, Marie-Claude Heuzey Department of Chemical Engineering, CREPEC – Research Center on High Performance Polymer and Composite Systems, Polytechnique Montreal, Montreal, QC H3T 1J4, Canada graphical a bstract article i nfo abstract Article history: The structural and rheological properties of aqueous suspensions of spray-dried cellulose nanocrystals Received 16 October 2017 (CNCs) were investigated and compared to those of freeze-dried. The cellulose nanocrystals were Revised 8 January 2018 obtained from sulfuric acid hydrolysis of wood pulp. Ultrasonication was used to disperse cellulose Accepted 9 January 2018 nanocrystals in Milli-Q water and the power applied during ultrasonication was shown to be the control- Available online 16 January 2018 ling parameter for their dispersion, more than total energy. Dynamic light scattering measurements showed a decrease of the average hydrodynamic diameter down to the same limiting value, i.e. 75 Keywords: nm, for both spray and freeze-dried cellulose nanocrystals. Since the same maximum dispersion state Cellulose nanocrystals (CNCs) was reached for both CNC
Journal of Colloid and Interface Science – Elsevier
Published: Apr 15, 2018
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