INFLUENCE ON EMULSION ST Source: http://www.ailusi-e.com Emulsion preparation techniques are generally more difficult than solid-state creams, because the emulsion should have good flowability and stability at the same time. How can the emulsion have good stability? Emulsification stability refers to the property that the emulsion maintains a distinctly stable state and does not produce a two-phase destabilizing phenomenon. Emulsification is the phenomenon of the liquid-liquid interface. Two immiscible liquids, such as oil and water are separated into two layers in a vessel. The low density oil is in the upper layer while the denser water is in the lower layer. If appropriate surfactants are added under vigorous mixing, the oil is dispersed in water to form an emulsion, this process called emulsification. Except for formulation, the influence on emulsion stability in general are emulsifying machine, emulsifying temperature, emulsifying time, and mixing speed. Different cosmetic emulsions have different temperature requirements. If the temperature is not controlled properly, the stability of the cosmetic emulsion may be impaired. In order to obtain a stable cosmetic emulsion, an appropriate emulsification time must be determined experimentally in order to fully mix the emulsion and ensure stability, guaranteed stability and mixing speed has great influence for emulsified. Traditional mixing machine just for simple mixing, you may see many bubbles inside or finished products with oil water dissociation after a long time. But why. As we know, water and oil are two immiscible liquids, they will be separated into two layers in a vessel. The low density oil is in the upper layer while the denser water is in the lower layer. And if the stirring speed is very high, it will take the air agitation form bubbles into system, then the emulsion become three phase and low stability. Ok, then there is a new question: How can we make stable and quality emulsion? This is a good question and the modern technology has helped us solved these problems. Modern emulsifying machine also called vacuum emulsifying mixer or vacuum mixer homogenizer. As the name implies, it is designed with vacuum system and homogenizer.
As we know, vacuumed condition means without any air inside, bubbles can be eliminated well. Also the vacuum defoaming can make the materials meet the requirement of being aseptic, to help you get stable emulsion. Usually finished products with oil water dissociation is due to bad emulsification, homogenizer is exactly for making water and oil mixing together much better. In addition to the general convection, the high-shear homogenizing emulsifier also has impact, extrusion, shear and friction. The precise coordination of the rotor and the stator ensures that the material can withstand hundreds of thousands of shears per minute. Last but not least, a quality vacuum emulsifying mixer is needed. Guangzhou Ailusi Machinery Co.,Ltd. with more than 10 years manufacturing experiences, would be very glad to help you. Welcome to contact with us!