Affiliations: [a] Department of Chemistry, University of Wisconsin, Madison Wisconsin 53706, U.S.A. | [b] Department of Polymer Science Faculty of Technology, Gunma University, Kiryu 376, Japan
Note: [] Accepted by: Editor S. Oka
Abstract: The complex viscosity η∗ has been measured of bovine red blood cells suspended in a medium of isotonic NaCl solutions including dextran and buffered with potassium phosphate at pH 7.0. A multiple lumped resonator apparatus was used at the frequencies of 144, 572, 1491, 3742, and 8026 Hz at 20.0°C. Due to the high molecular weight of dextran the medium also exhibited some viscoelasticity ηs∗. So we adopted the complex specific viscosity ηsp∗=(η∗−ηs∗)/|ηs∗|. At 20.0°C ηsp∗ decreased with the frequency where the hematocrit was 0.233 and ηs 0.34 poise. The measurements were made for the medium with different viscosity at 5.0°C and 25.0°C. The results are compared with the theory of elastic shells.
Keywords: Red cells, Suspensions, Viscoelasticity, Membrane rigidity
DOI: 10.3233/BIR-1983-20509
Journal: Biorheology, vol. 20, no. 5, pp. 519-529, 1983
