Rheology and Microstructure of Concentrated Suspensions of Plate-Shaped Colloidal Particles

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Jogun, Suzanne Michelle

Contributors dc:contributor

• Zukoski, Charles F.

• Engineering, Chemical

Language dc:language

eng

Identifier

(MiAaPQ)AAI9834695

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/82448