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Rheology of Suspensions Thickened by Cellulose Nanocrystals
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Version 1
: Received: 3 June 2024 / Approved: 4 June 2024 / Online: 4 June 2024 (14:07:51 CEST)
How to cite: Pal, R.; Pattath, K. Rheology of Suspensions Thickened by Cellulose Nanocrystals. Preprints 2024, 2024060203. https://doi.org/10.20944/preprints202406.0203.v1 Pal, R.; Pattath, K. Rheology of Suspensions Thickened by Cellulose Nanocrystals. Preprints 2024, 2024060203. https://doi.org/10.20944/preprints202406.0203.v1
Abstract
The steady rheological behavior of suspensions of solid particles thickened by cellulose nanocrystals is investigated. Two different types and sizes of particles are used in the preparation of suspensions, namely TG hollow spheres of Sauter mean diameter of 69 µm and Solospheres S-32 of Sauter mean diameter of 14 µm. The nanocrystal concentration varies from 0 to 3.5 wt% and the particle concentration varies from 0 to 57.2 vol%. The influence of salt (NaCl) concentration and pH on the rheology of suspensions is also investigated. The suspensions generally exhibit shear-thinning behavior. The degree of shear-thinning is stronger in suspensions of smaller size particles. The experimental viscosity data are adequately described by a power-law model. The variations of power-law parameters (consistency index and flow behavior index) under different conditions are determined and discussed in detail.
Keywords
rheology; non-Newtonian; shear-thinning; viscosity; suspension; nanocrystals, cellulose nanocrystals; nanoparticles; power-law model
Subject
Engineering, Chemical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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