The method of adding the emulsifier is dissolved in water, dissolved in oil, and dissolved, added, nascent soap method and melon adding liquid.
The method for dissolving the emulsifier in water: indirectly dissolving the emulsifier in water, and then gradually adding the oil to the water under vigorous stirring to prepare an oil/water type emulsion. If a water/oil type emulsion is to be formed, the oil phase is continuously added until the phase transition becomes a water/oil type emulsion, and the emulsion particles obtained by this method are not uniform in size and thus are not very fluctuating.
The method of dissolving the emulsifier in the oil: the emulsifier is dissolved in the oil phase (when the non-ionic surfactant is used as the emulsifier, the method generally used) has two ways to lose the emulsion.
1. Contaminants of emulsifiers and fats are indirectly added to water to form an oil/water emulsion.
2. The emulsifier is dissolved in the oil, and the water phase is added to the oil confusing substance to form a water/oil type emulsion at the beginning. When a small amount of water is added, the viscosity suddenly drops, and the phase transformation is oil/water emulsification. body.
The emulsion particles obtained by this preparation method are well-proportioned and have a uniform diameter of about 0.5 μm, which is commonly used.
