Bimodal model of suspension viscoelasticity
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
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. {copyright} {ital 1997 Society of Rheology.}
- DOE Contract Number:
- FG02-89ER14085
- OSTI ID:
- 664391
- Journal Information:
- Journal of Rheology, Journal Name: Journal of Rheology Journal Issue: 4 Vol. 41; ISSN JORHD2; ISSN 0148-6055
- Country of Publication:
- United States
- Language:
- English
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