Flocculation stability

The pigmented system that is comprised of dispersed particles is stabilized to preclude reagglomeration and/or flocculation Stabilization. 

Phase- and Flocculation-Stabilized Copper Phthalocyanine Blue Pigments... 

A very opaque version has recently been introduced to the market in the USA. This type, which is also yellower than traditional varieties, demonstrates not only excellent rheological behavior but also high flocculation stability and therefore high gloss. It is slightly more weatherfast than more transparent types. The main application is in lead-free automotive finishes for full shades. 

Coal, mineral, glass industries flotation, flocculation, stabilization, dewatering, hydrophilization, viscosity reduction... 

Figure 7.24 shows the effect of water on the stability of alumina suspensions that have been dispersed in cyclohexane by the adsorption of a monolayer of AOT." As the water content in the system increases, the suspension goes through a series of flocculated, stabilized, and flocculated stages. In an extremely dry state the dispersions flocculate rapidly, and the addition of trace amounts of water stabilizes the suspensions quite significantly. Thereafter, the suspensions remain stable over a range of water concentrations and then flocculate very rapidly at higher water concentrations. 

March GC, Napper DH. The thermodynamic limit to the flocculation stability of sterically stabilized emulsions. J Colloid Interface Sci 1977 61 383-387. 

Galactasol Guar Deiivs. [Aqualon] Hydroxypropyl guar gums used as vise, increasers, flocculants, stabilizer, suspending aids. 

In the foregoing chapters the effects of attached polymer chains on colloid stability have been set forth. We now turn to consider the effects of macromolecules that are not attached to the particles but rather are free in solution. Surprisingly, such free polymer is still able to affect colloid stability, being capable of generating both stability and flocculation. Stability that is imparted by free polymer is termed depletion stabilization. Aggregation that is induced by free polymer is called depletion flocculation. The latter will be discussed in this Chapter, consideration of depletion stabilization being postponed until the next Chapter. 

Table 4 Flocculation Stability of Selected Protein-Stabilized Emulsions... 

Uses Retanning agent, dispersant, scale inhibitor, flocculant, thickener, stabilizer in paper/pulp antisealant, dispersant, flocculant, stabilizer, thickener in cosmetics Features Cost-effective Properties Vise, liq. 30% act. 

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