Suspensions: The physical chemist defines the word “suspension” as a two phase system consisting of an undissolved or immiscible material dispersed in a vehicle (i.e., solid, liquid, or gas). The particles of the dispersed phase vary widely in size, from […]
STABILITY OF COLLOIDAL SYSTEMS: Colloidal particles undergo frequent collisions as a result of Brownian motion. Whether these collisions result in coagulation (permanent contact or close aggregation of particle), flocculation (temporary contact or large aggregates) or whether the particles rebound and […]
A disperse system is defined as a heterogeneous two-phase system in which the disperse phase is distributed as particles or droplets throughout another phase called as dispersion medium. Based on the size of dispersed particles within the dispersion medium, the […]
PROPERTIES OF COLLOIDAL DISPERSIONS: Kinetic Properties: Brownian motion- Brownian motion describes the random zigzag movement of colloidal particles. Colloidal particles are subject to random collisions with the molecules of the dispersion medium; hence, each particle pursues an irregular and a […]