Shear flow experiments in an assembly of gel beads and modelling of bingham behavior
作者:
François Lequeux,
Daniel Grosshans,
Roger Hocquart,
期刊:
Polymers for Advanced Technologies
(WILEY Available online 1992)
卷期:
Volume 3,
issue 1
页码: 33-39
ISSN:1042-7147
年代: 1992
DOI:10.1002/pat.1992.220030105
出版商: John Wiley&Sons, Ltd.
关键词: Powder mechanic;Rheology;Bingham fluid;Yield stress;Gels elasticity
数据来源: WILEY
摘要:
AbstractIn this paper, we present a rheological study of a compact layer of highly swollen gel beads. The flow regimes of these systems are modelled by an elastic sinusoid moving in a Newtonian fluid. This model predicts a yield stress varying with the square root of the elastic modulus of the gel bead. The slope at the origin (at zero velocity) of the flow curve is expected to depend only on geometrical parameters and on the solvent viscosity. The experimental data are in qualitative agreement with the theoretical predictions.
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