Why do we need special methods …
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Gaurav Seth 5 years, 4 months ago
Lyophilic colloids readily form a sol by bringing them into contact or by warming those with the medium due to their strong affinity for the dispersion medium.
For example, only heating with water in enough for preparing the sols of starch, gelatin, gum arabic etc.
However, it is not so easy to prepare the sols of lyophobic colloids practically as they have no affinity for the dispersion medium. Special methods are required for the preparation of lyophobic sols.
There are number of special methods used for preparation of lyophobic sols which can broadly be divided into the following categories:
Dispersion methods
Condensation or aggregation methods
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