Polyhyaluronic acid and steady shear flow
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10.1515_ot-2026-2001.pdf
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Author(s)
Pulatsu, Ezgi
Kanso, Mona
Giacomin, Alan
Date Issued
February 17, 2026
Journal
Open Transport
Publisher
Walter de Gruyter GmbH
Citation
Pulatsu, Ezgi, Kanso (منىقانصو), Mona A. and Giacomin, Alan J.. "Polyhyaluronic acid and steady shear flow" Open Transport, vol. 1, no. 1, 2026, pp. 20262001. https://doi.org/10.1515/ot-2026-2001
Version
Final published version
Abstract
Rotarance theory explains non-Newtonian rheological behavior using the physics of macromolecular orientation, and only this physics. This mathematical physics arrives at expressions for the rheological material functions in terms of, and only in terms of, macromolecular lopsidedness. Our previous work on the complex viscosity of aqueous hyaluronic acid arrives at the universal value for apparent macromolecular lopsidedness of 2 b∕ãν ≅ 2.3493 [Pulatsu et al., Phys. Fluids, vol. 37, no. 3, p. 033116, 2025]. By universal, we mean independent of molecular weight, dispersity, temperature, and concentration. In this Letter, we will test a new and recent analytical expression from rotarance theory for the steady shear viscosity function [Giacomin et al., Phys. Fluids, vol. 35, no. 8, p. 083111, 2023]. We will rely upon seminal steady shear viscosity measurements to test this new theory against the universal value abstracted from complex viscosity measurements. We find this new theory to be accurate up to Weissenberg number one half.
Subjects
hyaluronan
hydrodynamic interaction
rotarance theory
general rigid bead-rod theory
hyaluronic acid solutions
shish-kebab
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1515/ot-2026-2001
