Coagulation of electrosterically dispersed concentrated alumina suspensions for paste production

Rheological properties and stability of NMP based cathode slurries for lithium ion batteries

“…In this case, a cohesive, non-touching network is built by individual particles (Fig. 1c), which is voluminous enough to span the container [15,16]. Strong attractive interactions promote flocculation of particles and irreversible destabilization of the dispersion, whereas in a weakly coagulated system the particles form metastable, secondary bond based structures, which hold these particles at distance.…”

Stabilization of gamma alumina slurry for chemical–mechanical polishing of copper

“…11, showing similar trend with the change in mean diameter. The minimum viscosity was measured in pH 7, at which the best dispersion state of slurry could be obtained, since achievement of minimum viscosity is generally associated with maximum dispersion [23,28]. These results indicate that dispersion is mainly dependent on the electrostatic repulsion between particles.…”

“…This stretching out favors a better bridging of the alumina particles by the polymer and thus enhances the alumina flocculation. However, at higher poly(acrylic acid) concentrations, the surface coverage of alumina particles is high and the adsorbed poly(acrylic acid) exhibits less stretching (coiled structure), which reduces the effect of bridging alumina particles in the suspension leading to stabilization [23,28].…”

“…While the dispersion/stabilization of aqueous α-alumina powder suspensions has been studied extensively in the literature [22][23][24][25][26][27][28][29], little attention has been devoted to examining the dispersion property of γ -alumina nanoparticles. The intent of this work is to examine the stabilization conditions of γ -alumina particles manufactured by wet grinding (milling) process in aqueous medium.…”

Coagulation of mixed organic systems and alumina particles for paste production

“…1-3) and the polyelectrolyte concentrations (nos. [4][5][6] were tested without changing the pH (2) of the starting solution of CT. From the first set of experiments (1-3), a ratio n − /n + = 38.64, with a large excess of anionic polymer was selected because it leads to the precipitation of flakes, dispersible with US treatment and not to a large agglomerate unbreakable. From the second set of experiments (nos.…”