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Title:Rheology and Microstructure of Concentrated Suspensions of Plate-Shaped Colloidal Particles
Author(s):Jogun, Suzanne Michelle
Doctoral Committee Chair(s):Zukoski, Charles F.
Department / Program:Chemical Engineering
Discipline:Chemical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Chemical
Abstract:The second type of clay particles have a smaller aspect ratio approximately equal to 8. These suspensions demonstrate shear thickening at $\phi \ge$ 0.50 and also have a shear history dependent elastic modulus, G$\sp\prime.$ In the shear thinning region G$\sp\prime$ decreases with increasing shear rate. In the shear thickening region the modulus increases rapidly. Since G$\sp\prime$ is related to particle alignment, these results imply that the particle alignment increases until thickening occurs. At that point the particles become highly misaligned. These alignment changes are confirmed by conductivity measurements.
Issue Date:1998
Description:91 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998.
Other Identifier(s):(MiAaPQ)AAI9834695
Date Available in IDEALS:2015-09-25
Date Deposited:1998

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