reduces the surface charge that causes repulsion and deflocculation
Suspension stability is dependent on critical Zeta potential of the particles.
If the Zeta potential
is reduced, below a critical value, the degree of repulsion between particles is lower and the
particles come closer together and flocculate.
o
Add appropriate electrolyte to neutralize the Zeta potential of the dispersed phase
o
Use appropriate ionic surfactants which could promote wetting as well as neutralize the
zeta potential
