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A Study on Emulsion Stability of O/W and W/S Emulsion according to HLB of Emulsifier

유화제의 HLB에 따른 O/W 및 W/S 에멀젼의 유화 안정성에 관한 연구

  • Yeon, Jae Young (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.) ;
  • Shin, Bo Ram (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.) ;
  • Kim, Ta Gon (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.) ;
  • Seo, Jeong Min (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.) ;
  • Lee, Cheong Hee (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.) ;
  • Lee, Sang Gil (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.) ;
  • Pyo, Hyeong Bae (Cosmetic Research Institute, Hanbul Cosmetics Co., Ltd.)
  • 연제영 (한불화장품(주) 기술연구원 화장품연구소) ;
  • 신보람 (한불화장품(주) 기술연구원 화장품연구소) ;
  • 김타곤 (한불화장품(주) 기술연구원 화장품연구소) ;
  • 서정민 (한불화장품(주) 기술연구원 화장품연구소) ;
  • 이청희 (한불화장품(주) 기술연구원 화장품연구소) ;
  • 이상길 (한불화장품(주) 기술연구원 화장품연구소) ;
  • 표형배 (한불화장품(주) 기술연구원 화장품연구소)
  • Received : 2014.02.24
  • Accepted : 2014.04.01
  • Published : 2014.09.30

Abstract

In this study, O/W and W/S emulsions were prepared by combining oils having different required hydrophilic lipophilic balance (HLB) values under the diverse conditions of HLB values composed of a hydrophilic surfactant and a lipophilic surfactant and their stability was investigated. Results showed that the higher the viscosity of O/W emulsions was as the lower the HLB value of emulsifier and emulsion particle showed a tendency to be a smaller and compact and stabler in centrifugal filtration. W/S emulsions also showed a similar tendency to be a smaller and compact as HLB values of emulsifier was higher and stabler in centrifugal filtration. However, the viscosity of W/S emulsion tended to get lower in HLB conditions of all emulsifiers as the time passed. This indicated that the emulsions had an unstable feature in long-term stability. In conclusion, the results showed opposite to the known theory that O/W emulsion is proper to be applied by nonionic surfactant with a high HLB value and W/S emulsion to be applied by nonionic surfactant with a low HLB value and provide useful information for the cosmetics research and related areas.

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