The dispersed phase of the colloidal dispersion can be classified either as a lyophilic or lyophobic, If the water is used as a solvent then these classifications are called hydrophilic and hydrophobic correspondingly.
Hydrophilic Colloids
Hydrophilic Colloids
A hydrophilic colloid molecule has a similarity to water molecules and when it dispersed in the water it becomes hydrated. Hydrated colloids increase the system viscosity, thus improving the stability by decreasing the interaction amongst the particles and their settle tendency; they may also have a net surface electrical charge. The charge signal relies on the pH of the system and the chemical properties of the colloid.
Hydrophobic colloids
A hydrophobic colloid has slight or almost no proclivity for the water and creates no modify in system viscosity. The particles may take a charge, because of the adsorption of electrolyte ions as of the solution.
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