Electrostatic, electrokinetic, and ordering properties of concentrated suspensions of polystyrene latex

The electrokinetic properties of polystyrene latexes are investigated and data reduction indicates that surface charge regulation occurs through the adsorption of ions from the suspending medium. An independent non-electrokinetic method of determining ionic adsorption is developed confirming these results. Changes in particle surface properties and interaction potentials with volume fraction are examined with a model that indicates surface properties change little with volume fraction at moderate surface potentials and when the average particle separation is not too small. Further tests of how surface properties change with suspension volume fraction and fluid phase ionic strength are carried out by developing a model of suspension thermodynamic properties based on pair interactions. The statistical mechanical technique correctly predicts suspension osmotic pressures and the order/disorder phase transition.

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

• Voegtli, Leo Paul

Contributors dc:contributor

• Zukoski, Charles F.

• Engineering, Chemical

Statement dc:rights

• Copyright 1989 Voegtli, Leo Paul

Language dc:language

eng

Identifier

AAI9011063
(UMI)AAI9011063

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20752