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Thursday, December 20, 2018

Principles on the Effect of Additives

Electrolytes: 
The lyophobic colloid stability relies upon the electrical repulsion applied by the electrical charges on their surface. On the surface of colloidal, the trace amounts of adsorbed electrolytes might be responsible for the electrical charge so the stability increases. The ions valency has a charge inverse to that of the molecule seems to decide the efficiency of the electrolyte for the coagulating of colloids
Gelatin: 
Gelatin is a hydrophilic colloid. It is decidedly charged underneath 4.7 pH. It goes about as shielding for the hydrophobic colloids. Hence, hydrophobic colloids may be changed to hydrophilic and pass on the stability.
Aluminum chloride: 
It contributes positively charged aluminum chloride ions for adsorption on the particles of negatively charged. Thus, the negative zeta potential diminishes. At the point when the adequate amount is used.


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