Effects of chance of collision among particles on electro-rheological response

The electro-rheological (ER) responses of suspensions with cation exchange resin particles and polyaniline particles were measured under different exp erimental conditions such as the strength of applied electric field, the vi scosity of continuous phase, the shear rate, and the volume fraction of par ticles. The ER response became faster as the strength of applied electric f ield, the shear rate,and the volume fraction of particles increased while i t became slower as the viscosity of continuous phase increased, These resul ts were discussed: in terms of the electrical and hydrodynamic interactions , as well as the chance of collision among particles.