Earticle

초록

영어

Encapsulation of TiO2 sol or TiO2 nanoparticles with chitosan shell was conducted to enhance a sun protection for cosmetic preparations. Nanocapsules contained TiO2 were evaluated an UV absorption and UV blocking rate. To obtain the TiO2 sol (TS), titanium isopropoxide was
diluted into anhydrous ethanol to obtain 10 wt% solution based on TiO2 in a dehumidified glove box, then the solution was stirred for a day at ambient temperature. The commercial TiO2 (Daegusa, P25) were employed. TS and P25 type were measured by XRD. The TS was composed of entirely an anatase type of TiO2. The particle size of TiO2 contained into TS was
below 10 nm. It was considerably smaller than P25 TiO2 particles. The loading amount of titania was determined by TGA. In the nanocapsulation of TiO2 with chitosan, loading efficiencies of the TS and P25 were obtained as 45% and 18%, respectively. The encapsulated TiO2 particles were
ranged in 30-100 nm. The TS nanocapsules exhibited a high blocking percent to UV-A up to 97% . The results indicated that this TS loaded chitosan nanocapsules had significantly higher UV protection effects.

키워드

저자

• Hyo-Yun JUNG [ Interdisciplinary Program of Perfume and Cosmetic, Chonnam National Interdisciplinary Program of Perfume and Cosmetic, Chonnam National University, Gwangju, 500-757, Korea. ]
• Ki-Young LEE [ Interdisciplinary Program of Perfume and Cosmetic, Chonnam National Interdisciplinary Program of Perfume and Cosmetic, Chonnam National University, Gwangju, 500-757, Korea. ]
• Jin KIM [ Department of Advanced Chemicals Graduate School, Chonnam National University ]
• Kyong-Hwan CHUNG [ Center for Functional Nano Fine Chemicals, Chonnam National University, Gwangju 500-757, Korea. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576