Rheologic behavior of bovine calf serum
Publication date
2021-05-13
Document type
Forschungsartikel
Author
Organisational unit
Publisher
MDPI
Series or journal
Materials
ISSN
Periodical volume
14
Periodical issue
10
Article ID
2538
Peer-reviewed
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Part of the university bibliography
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Funding(s)
Language
English
Keyword
Biomedical rheology
Viscosity
Bovine calf serum
Shear thinning
Wear
Joint replacement
Arthroplasty
Numerical simulation
Abstract
Recent studies have illuminated the rheological behavior of synovial fluid and the role of protein and hyaluronan (HA). However, with respect to artificial joint replacement in standardized wear simulations, bovine serum is used as fluid test medium. Little is known about the rheological characteristics of bovine serum, which are needed for precise tribological investigations. The steady shear viscosity 𝜂 of bovine calf serum is determined for protein concentrations used in standardized wear simulations depending on shear rate 𝛾˙ and temperature T. Additionally, the density of the serum is determined for both protein concentrations. The results show shear thinning behavior of bovine calf serum with a nearly Newtonian behavior in the range of high shear rates. Within the range of high shear rates, mean viscosities of η = 0.82–0.88 mPa·s were found for protein concentrations of 20 g/L and mean viscosities of η = 0.88–0.94 mPa·s for 30 g/L, decreasing with temperature. Densities of 1.004–1.005 g/cm³ and 1.007–1.008 g/cm³ were found for 20 and 30 g/L protein concentrations, respectively.
Description
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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