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Time dependent rheology of artificial slurries
Author(s) -
Brown J. P.,
Pinder K. L.
Publication year - 1971
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450490108
Subject(s) - thixotropy , rheology , viscometer , slurry , materials science , viscosity , newtonian fluid , suspension (topology) , particle (ecology) , carboxymethyl cellulose , viscoelasticity , chemical engineering , apparent viscosity , composite material , thermodynamics , sodium , mathematics , physics , geology , oceanography , homotopy , pure mathematics , engineering , metallurgy
Gels, formed by suspending cellulose acetate particles of regular shape and size in a Newtonian medium, were sheared in a rotational viscometer to study their time dependent rheological behavior. Qualitative observations of the effect of the well defined particle parameters, shape surface area and concentration on the flow parameters were made. The viscosity decay behavior fitted the model previously proposed by Pinder for slurries of natural particles. By considering the effect of the weighting salt used in the suspending medium, it was found that the theory that ionic forces are active in stabilizing the thixotropic gel structure was supported.