Loading...
Search for:
microparticle-suspension
0.005 seconds
Stabilization of Microparticle Suspension by Means of Nanoparticle with Focus on the Optical Measurement Methods
, M.Sc. Thesis Sharif University of Technology ; Saidi, Mohammad Hassan (Supervisor) ; Mozafari, Ali Asghar (Co-Advisor)
Abstract
Many of industrial processes include suspension in their middle section of production, final product or residue. Majority of these two-phase mixtures are unstable due to their large particle size (larger than one micrometer). Therefore, Study of particle distribution in suspensions for generation of stabilized suspension becomes significant. In this study a new mechanism in stabilization of microparticle suspension known as nanoparticle halo mechanism has been assessed. Experiments have been conducted in dilute suspension and two-way coupling range. The effect of the presence of silica nanoparticle on zirconia microparticle suspension has been investigated. The effect of zeta potential of...
Stabilization of the suspension of zirconia microparticle using the nanoparticle halos mechanism: zeta potential effect
, Article Journal of Dispersion Science and Technology ; Volume 37, Issue 1 , 2016 , Pages 6-13 ; 01932691 (ISSN) ; Saidi, M.H ; Zabetian, M ; Sharif University of Technology
Taylor and Francis Inc
2016
Abstract
An experimental study has been conducted to investigate the effect of silica nanoparticle halos on the stability of the zirconia aqueous suspension. The results of turbidity measurements showed that addition of nanoparticles to the suspension increases the stability of the zirconia suspension for all pH values. The achieved stability refers to the formation of nanoparticle halos around the microparticles that can be observed by scanning electron microscopy (SEM) imaging. The best stabilization is achievable when zirconia microparticles are at the isoelectric point. The minimum stabilization occurs when microparticles have relatively high zeta potential and the force between micro and...