Flocculation of platelet colloid particles induced by non-adsorbing polymer.

Relaxation Times of Nano-Colloid Flocculation Induced by Adsorbing and Non-adsorbing Polymers

We have developed a self-consistent field theory of the effective interactions between nano-colloids mediated by adsorbing and non-adsorbing polymers. By making use of this theory, we have calculated the colloid immersion energy and the potential of the polymer-mediated forces for the above cases of polymer adsorption. On the basis of the obtained results for the polymer-mediated potentials, we...

Cerium Extraction from Solution by Adsorbing Colloid Flotation (ACF)

In this research, cerium recycling was studied by Adsorbing Colloid Flotation (ACF). Ten important parameters including collector type and dosage, cerium and colloid concentrations, frother type, activator type, preparation and frothing time, air flowrate and pH, each in two levels, were investigated. Statistical design of experiment was implemented for process modelling and analysis of var...

Impact of Porogens on the Pore Characteristics of Zirconia Particles Made by Polymer-Induced Colloid Aggregation

Zirconia particles were prepared from a 20% colloidal sol (ZrO2) by the polymer­induced colloid ag­ gregation (PICA) process, both in the presence and absence of porogens. Specifically, porous zirco­ nia particles having varying porosity were prepared by a two­step protocol wherein a porogen was first embedded during the particle synthesis, followed by its removal in a subsequent step. In this ...

Polymer induced depletion potentials in polymer-colloid mixtures

The depletion interactions between two colloidal plates or between two colloidal spheres, induced by interacting polymers in a good solvent, are calculated theoretically and by computer simulations. A simple analytical theory is shown to be quantitatively accurate for the case of two plates. A related depletion potential is derived for two spheres; it also agrees very well with direct computer ...

High-speed Imaging of Polymer Induced Fiber Flocculation