Since the dispersed phase has little affinity for the dispersion medium , colloid formation is difficult.
They are also known as irreversible sols since they cannot be rebuilt after precipitation by merely adding dispersion media.
They are unstable and rapidly coagulate when electrolytes are added, shaken, or heated.
Lyophobic colloids can be manufactured using certain techniques and require the addition of a stabilising substance.
Metals and their insoluble compounds, such as sulphides, are examples of lyophobic colloids.
Reason for stability of Lyophobic colloid
The electrically charged colloidal particles in the solution improve the sustainability of a lyophobic colloidal solution.
As a result, the particles reject each other or do not cluster (come together) to create big non-colloidal particles.
Colloidal particles can be positively or negatively charged. In a colloidal solution, all dispersed particles have the same charge, whereas the dispersion medium has an equally opposite charge.
