A Study on Emulsifying Property of Liquid Crystal Emulsifier for 4 Kinds of Commonly Used Oils
In this study,the emulsifying ability of four types of nonionic liquid crystal emulsifiers(OLIVEM 1000,MONTANOV 68,Plantasens Emulsifier HP30 and Emulgade®PL 68/50)and one type of anionic non-liquid crystal emulsifier(Romol AFSK)for four types of common oils(Silicones-dimethicone,mineral oil,synthetic oil-caprylic/capric triglyceride and vegetable oil-squalane)was investigated.The emulsifying effect and emulsifying stability of different emulsifiers were evaluated by microscopic electron microscopy and temperature stability experiment.The results showed that the emulsifying ability on dimethicone of the five emulsifiers was as follows:MONTANOV 68＞Plantasens Emulsifier HP30＞Emulgade ®PL 68/50＞OLIVEM 1000＞Romol AFSK.the emulsifying ability on caprylic/capric triglyceride was as follows:Emulgade®PL 68/50＞Plantasens Emulsifier HP30＞MONTANOV 68＞OLIVEM 1000＞Romol AFSK.Furthermore,4 types of liquid crystal emulsifiers were used to wrap the mineral oil and squalane,and the droplets were found to be small,dense and uniform.On the contrary,the droplets of non-liquid crystal emulsifier(Romol AFSK)emulsified mineral oil were large and uneven.The influence of oil on the stability of the emulsion system from strong to weak was as follows:squalane＞mineral oil＞dimethicone＞caprylic/capric triglyceride,which was consistent with the polarity index of oils.Moreover,with the increase in the amount of oil added,the stability of the material was reduced significantly.
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