Mechanism Of Action Of Emulsifier
Jan 14, 2021
The emulsifier mainly reduces the free energy of the interface to form a firm emulsified film to form a stable emulsion. By reducing the free energy of the interface, the droplet particles form a spherical shape to maintain a minimum surface area.
The process of forming an emulsion between two different liquids is a process of forming a large number of new interfaces between the two liquids. The smaller the droplet, the larger the new interface and the greater the free energy on the surface of the droplet particles.
The emulsifier is adsorbed on the surface of the droplet, which can effectively reduce the surface tension or surface free energy. The emulsifier is adsorbed around the droplets and arranged in a directional arrangement around the droplets to form a film, thereby reducing the oil-water interfacial tension and effectively preventing the aggregation of the droplets. The more neat the emulsifier is arranged on the surface of the droplets, the firmer the emulsified film and the more stable the emulsion.
