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Evaluation of Emulsion Stability for Cosmetic Facial Cream Emulsion Using Mixed Nonionic Emulsifier

비이온성 혼합유화제를 이용한 화장용 크림 유화액의 유화안정성 평가

  • Hong, In Kwon (Department of Chemical Engineering, Dankook University) ;
  • Kim, Su In (Department of Chemical Engineering, Dankook University) ;
  • Park, Bo Ra (Department of Chemical Engineering, Dankook University) ;
  • Choi, Junho (Department of Chemical Engineering, Dankook University) ;
  • Lee, Seung Bum (Department of Chemical Engineering, Dankook University)
  • Received : 2016.08.10
  • Accepted : 2016.09.07
  • Published : 2016.10.10

Abstract

Emulsification is a fundamental process of cosmetics manufacture which produces stabilized emulsion by dispersing the liquid from the one side to the other by adding an emulsifier in an immiscible liquid. Various types of emulsifiers can produce various cosmetics. In this study, we evaluated the stability of emulsifier by measuring variations in the viscosity, particle size and particle size distribution. HLB values of nonionic emulsifiers which are used in this paper are 12.9, 12.9, 12.6 and 12.5 for EMU-01, EMU-02, EMU-03 and EMU-04, respectively. All types of emulsions showed an increase in the particle size and a decrease in the viscosity with the time. Also they showed a decrease in the particle size and an increase in the viscosity with respect to increasing the stirring speed. However, the stability of emulsions up to 56 days was secured by observing the non-separation of emulsions. In addition, the viscosity of the emulsions was measured in the order of EMU-01 > EMU-02 > EMU-03 > EMU-04 while the size of particles was measured in the order of $EMU-01{\approx}EMU-02$ > $EMU-03{\approx}EMU-04$. This indicates that our emulsion can be potentially used for preparing a cosmetic facial cream.

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