How emulsion are formed
The most common method of preparing an emulsion is by mechanically dispersing one liquid phase in another by formation of small droplets. This takes place by a beater blade. A stable emulsion is not formed by merely mixing of the liquids. When the emulsion is left to stand, droplets in the dispersed phase coalesce due to surface tension. It is possible, however to stabilize an emulsion by adding a suitable substance termed emulsifier.