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Title: Rheological Aspects of Cellulose Nanomaterials: Governing Factors and Emerging Applications

Source: Advanced Materials

Author(s)Li, Mei‐Chun ; Wu, Qinglin ; Moon, Robert J.; Hubbe, Martin A.; Bortner, Michael J.

Publication Year: 2021  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4707-3C

Abstract: Cellulose nanomaterials (CNMs), mainly including nanofibrillated cellulose (NFC) and cellulose nanocrystals (CNCs), have attained enormous interest due to their sustainability, biodegradability, biocompatibility, nanoscale dimensions, large surface area, facile modification of surface chemistry, as well as unique optical, mechanical, and rheological performance. One of the most fascinating properties of CNMs is their aqueous suspension rheology, i.e., CNMs helping create viscous suspensions with the formation of percolation networks and chemical interactions (e.g., van der Waals forces, hydrogen bonding, electrostatic attraction/repulsion, and hydrophobic attraction). Under continuous shearing, CNMs in an aqueous suspension can align along the flow direction, producing shear-thinning behavior. At rest, CNM suspensions regain some of their initial structure immediately, allowing rapid recovery of rheological properties. These unique flow features enable CNMs to serve as rheological modifiers in a wide range of fluid-based applications. Herein, the dependence of the rheology of CNM suspensions on test protocols, CNM inherent properties, suspension environments, and postprocessing is systematically described. A critical overview of the recent progress on fluid applications of CNMs as rheology modifiers in some emerging industrial sectors is presented as well. Future perspectives in the field are outlined to guide further research and development in using CNMs as the next generation rheological modifiers.

Keywords: cellulose nanomaterials; nanofibrillated cellulose; cellulose nanocrystals; rheology; fluid application

Publication Review Process: Formally Refereed

File size: 9,216 kb(s)

Date posted: 05/17/2021

This publication is also viewable on Treesearch:  view
RITS Product ID: 10162
Current FPL Scientist associated with this product
Moon, Robert J.
Materials Research Engineer

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