Viscoelasticity of Blood

Abstract

The dynamic rigidity and loss modulus of blood were measured. Two different kinds of apparatus were used at different ranges of frequency and shear rate. For the blood sample with a 43 per cent hematocrit, the dynamic viscosities and n” decreased with increasing shear rate. At high shear rates, n” was not observable. For a blood sample with a larger hematocrit, 64 per cent, n” became observable. For horse blood samples with the hematocrit below 50 per cent, the dynamic rigidity and loss were found to be time dependent at low measuring frequency and shear strain. This would be associated with the formation of rouleaux and their network. © 1977, The Society of Rheology, Japan. All rights reserved.