Shear behavior and microstructures of confined colloidal suspensions

Rheological properties and microstructures of concentrated charge-stabilized suspensions confined to gap sizes on the order of a few particle diameters are investigated by molecular dynamics computer simulations. Suspensions of uniform spheres at volume fractions ranging from 0.28 to 0.53 covering the crystalline phase are studied. The suspensions are modeled as spheres interacting via a repulsive short-ranged electrostatic potential. Stress versus shear rate behavior is examined as a function of particle volume fraction, gap size, and shear history. Microstructures for systems at equilibrium and under shear are investigated by direct observation of particle configurations and by scattering patterns generated from structure factor calculations.

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

2011

Author dc:creator

• Hug, John Eric

Contributors dc:contributor

• Zukoski, Charles F.

• Engineering, Chemical
• Engineering, Materials Science

Statement dc:rights

• Copyright 1995 Hug, John Eric

Language dc:language

eng

Identifier

AAI9522120
(UMI)AAI9522120

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20124