Lyophobic Colloid

Definition - What does Lyophobic Colloid mean?

A Lyophobic Colloid is a substance that contains large molecules that do not properly dissolve in liquids. The term Lyophobic comes from “Lyo” which means solvent and “Phobic” which means hating. When such colloids dissolve in a liquid, a very weak attraction force exists between the liquid molecules and colloidal particles and system does not readily become a colloidal solution.

Petropedia explains Lyophobic Colloid

As lyophobic colloidal particles do not mix with a liquid, lyophobic solutions are difficult to prepare and special techniques are used to ensure that the colloidal particles are dissolved in the liquid. All lyophobic solutions are generally less stable as they have a weak force of attraction between the colloidal particles and the liquid particles. Even if a small quantity of electrolyte is added in such solutions, they become very unstable and tend to form a precipitate. Lyophobic solutions are irreversible in nature.

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