Date of Award
January 2016
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Chemical Engineering
First Advisor
Elias I Franses
Second Advisor
David S Corti
Committee Member 1
You-Yeon Won
Committee Member 2
Carlos Martinez
Abstract
Agglomeration and sedimentation of suspended colloidal particles occur in many natural phenomena, in consumer products, and in engineering applications. Stabilized colloidal pigment dispersions were used in ancient Egypt and in ancient France thousands of years ago. Present day applications include the manufacturing of paints and coatings, enhanced oil recovery, waste-water treatment, pharmaceutical dispersions, biotechnology, and inkjet printing. The most common problem in colloidal science is how to stabilize suspended colloidal particles against agglomeration by controlling their interparticle forces. If the particles agglomerate, the sizes of the resulting agglomerated particles increase, increasing the sedimentation (or creaming) rate, and the suspensions can become unstable. In certain coating processes, preventing the agglomeration of dispersed particles is less important, since the particles may agglomerate after the coating is applied and dried. By contrast, strategies for preventing sedimentation, whether or not agglomeration occurs, are particularly important for suspensions containing high-density particles. For such suspensions, few fundamental studies are available in the literature, even though their uses are widespread. This thesis focuses principally, for the first time in
Recommended Citation
YANG, YUNG-JIH, "EXPERIMENTAL AND MODELING STUDIES OF COLLOIDAL SUSPENSION STABILITY OF HIGH-DENSITY PARTICLES IN AQUEOUS SOLUTIONS" (2016). Open Access Dissertations. 1235.
https://docs.lib.purdue.edu/open_access_dissertations/1235