Bimodal model of suspension viscoelasticity
作者:
M. Z. Sengun,
R. F. Probstein,
期刊:
Journal of Rheology
(AIP Available online 1997)
卷期:
Volume 41,
issue 4
页码: 811-819
ISSN:0148-6055
年代: 1997
DOI:10.1122/1.550868
出版商: The Society of Rheology
关键词: Suspension, bimodal;Colloidal suspension;SUSPENSIONS;RHEOLOGY;VISCOSITY;COLLOIDS;PARTICLE SIZE;HYDRODYNAMICS
数据来源: AIP
摘要:
In the bimodal model of the viscoelastic behavior of a bimodal suspension with a colloidal size fine fraction and a noncolloidal size coarse fraction, the two fractions behave independently of each other when the particle size ratio is large. The colloidal fraction is solely responsible for the non-Newtonian behavior while only hydrodynamic interaction takes place between the coarse particles. Measurements performed on a bimodal suspension and on a suspension of noncolloidal particles in a polymeric liquid indicate that the non-Newtonian behavior originates from the colloidal fraction in the former and from the polymeric liquid in the latter. The results support the validity of the concepts behind the bimodal model.
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