겔화에 의한 Water-in-Oil에멀젼의 안정성;이산화티타늄(TiO₂)이 함유된 Sun-block Cream의 응용

• 영문명: Stability of Water-in-Oil Emulsion by Gelation;Application of Sun-Block Cream containing Titanium Dioxide(TiO₂)
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 김인영(In Young Kim)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제17권 제2호, 67~75쪽, 전체 9쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2000.06.30

영문 초록

Cosmetic industries have recently developed sun-block products, which are composed of W/O or O/W emulsion system. It was very difficult for waterproofing product to show the stability in W/O emulsion with TiO₂. To enhance the stability of W/O emulsion, it needs to be combined with the water and oil soluble components as the gelling agents. The emulsifiers used in W/O were 3.0% of cetyl dimethicone copolyol, 2.0% of sorbitan sesquioleate as the basic emulsifiers, and 0.6% of quaternium-18 bentonite and 1.5% of dextrin palmitate as stabilizer were used. The content of titanium dioxide was optimized up to 8.0%. Titanium dioxide was used as the UV scattering powder coated with Al₂O₃(UV-sperse T40/TN). The sunscreen cream prepared with W/O emulsion system by using QB and DP showed higher stability than that of W/O emulsion system by using each QB and DP. W/O emulsion from Formula 3 for passing one year was very durable more than F1 and F2. Within W/O emulsion by observing F1, F2 and F3 for one year, F3 was more excellent than F2 and F3 when they were observed at RT, 4℃, 40℃, because F3 used the mixed QB and DP in W/O emulsion. The zeta potential for F1, F2, and F3 after one year were 21, 30 and 43, respectively. From these result F3 was found best stable emulsion. The in-vitro SPF value for F3 was 35 for the initial product at room temperature and also, the in-vitro SPF values of F3 was 32 for after one year. Finally, the mean in-vivo SPF value of 10 volunteers for F3 was 27.3 by the Korea cosmetic association made the rules of SPF.

목차

Abstract

1. 서론

2. 실험

3. 결과 및 고찰

4. 결론

참고문헌