대한화장품학회지 (Journal of the Society of Cosmetic Scientists of Korea)

  • 제38권2호
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  • Pages.119-131
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  • 2012
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  • 1226-2587(pISSN)
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  • 2288-9507(eISSN)
대한화장품학회 (Society of Cosmetic Scientists of Korea)
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유화제의 구조에 따른 W/O 에멀젼의 특성 및 안정도에 관한 연구

An Experimental Study on the Property and Stability of W/O Emulsion by Various Structures of Emulsifier

  • 투고 : 2012.04.16
  • 심사 : 2012.06.20
  • 발행 : 2012.06.30
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초록

w/o 에멀젼은 내수성이 뛰어나고 보습 효과를 오랫동안 지속시킬 수 있으므로 화장품에 많이 사용하지만 안정도가 좋지 않기 때문에 안정한 w/o 에멀젼을 만들기 위해서는 전해질의 농도, 오일의 극성 정도, 수상의 비율, 유화제의 농도 등을 조절하는 것이 매우 중요하다. 안정도에 영향을 주는 여러 가지 요소 중에서 유화제의 구조에 따라 유화가능여부와 안정도가 어떻게 달라지는지에 초점을 맞추고, 유화제를 구조적으로 polyglyceryl ester 계열, silicone 계열, sugar 계열 유화제 등으로 나누어서 실험을 진행하였다. 또한 유상에 사용되는 오일의 실리콘 함량을 다르게 하여 유화제의 유화 능력을 검토하였다. 실험 결과를 참고하여 유화제에 따른 에멀젼의 입자, 점도의 경시 변화 등의 w/o 에멀젼의 특성을 찾아내고, 여러 조건에서 에멀젼의 안정도를 관찰하였다.

The W/O emulsion is widely used for cosmetics because of its water-proofing benefit and long-lasting moisturizing effect. However, because of low stability of the W/O emulsion, it is very important to control the concentration of electrolyte and emulsifying agent, and ratio of water phase. Among these factors, we focused on the effects of different structures of emulsifying agents on the change of stability. Emulsifying agents were sorted into polyglyceryl ester, silicone and sugar series. We also examined the emulsifyingability of emulsifier by changing the ratio of normal and silicon oil in the oil phase. Through these experimental results, we figured out the property of w/o emulsion depending on the types of emulsifiers, and observed the stability of emulsion considering the change of particles and viscosity over time.

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