• Title/Summary/Keyword: 세틸알콜

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Freeze drying of a Wooden Comb Excavated at Shinchang-dong Wetland Site with Cetylalcohol (세틸알콜을 이용한 광주 신창동 저습지 출토 목제 빗의 동결건조)

  • Park, Youngman
    • Conservation Science in Museum
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    • v.11
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    • pp.49-52
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    • 2010
  • A wooden Comb excavated at Shinchang-dong wetland site was treated with cetylalcohol as a reinforcing agent. The conservation process was done by freeze drying the wooden artifact after substituting it with no.3 butyl alcohol and impregnating with 40wt% cetylalcohol solution. Consequently there was no noticeable surface damage. Also it showed 54% of remaining weight and a shrinkage of length 3.3%, width 2.1% and thickness 3.1%. Therefore using cetylalcohol for conservation of waterlogged archeological wood was effective dimensional stability and remaining weight.

Conservation of Wooden Well-bucket Excavated from Siji-dong, Daegu (대구 시지동 출토 목제 두레박 보존처리)

  • Lee, Hyosun;Jeon, Hyosoo
    • Conservation Science in Museum
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    • v.6
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    • pp.67-71
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    • 2005
  • We conduct the conservation treatment for the wooden well bucket excavated from civilian remains in Siji-Dong, Daegu. This bucket was in very poor condition, having been buried for a long time; thus, cetyl alcohol was used for the conservation. After replacing the water inside the wooden material with alcohol, the density of the cetyl alcohol was increased by 20, 40, 60, and 80% and immersed for two weeks at each step. After completing the immersion procedure, the remaining cetyl alcohol was removed, and the bucket, dried under normal atmosphere.

Stability of Henna Natural Hair Dye Cream Formulation According to Cetyl Alcohol Contents (Cetyl alcohol 함량에 따른 크림 제형 Henna 천연 염모제의 안정성)

  • Kang, Eyoung;Lee, Seunghee;Kim, Woonjung;Jung, Jongjin
    • Journal of the Korean Applied Science and Technology
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    • v.38 no.4
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    • pp.1176-1182
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    • 2021
  • In this study, the emulsion stability of henna, a natural hair dye, according to the content of cetyl alcohol, one of the emulsification stabilizers, was analyzed, and the content of cetyl alcohol showing the most stable emulsification was confirmed. To analyze the emulsion stability, differences in particle size, particle shape, viscosity, and color after dyeing were compared according to the content of cetyl alcohol. As a result of dynamic light scattering (DLS) zeta analysis, cetyl alcohol 3% showed the highest zeta potential value of 115.9 mV, and the particle size distribution was henna in which a cream-type hair dye containing 3% cetyl alcohol was dispersed in distilled water. The width of the particle size distribution was narrow compared to. As a result of viscometer analysis, the viscosity increased as the content of cetyl alcohol increased. As a result of measuring the henna pH of the cream formulation, it was measured in a pH range suitable for the scalp. As a result, emulsion stability increases as the content of cetyl alcohol increases in henna cream formulations for hair dye.

Characteristics of α-Tocopherol-loaded Nanostructured Lipid Carriers and their Stabilization Effect (α-Tocopherol을 함유한 Nanostructured Lipid Carriers의 특성과 안정화 효과)

  • Jun, Yoon Kyung;Lim, Yoon Mi;Jin, Byung Suk
    • Applied Chemistry for Engineering
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    • v.26 no.6
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    • pp.659-665
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    • 2015
  • Loading of hydrophobic ${\alpha}$-tocopherol into nanostructured lipid carrier (NLC) was performed for improving its oxidative stability. First, various NLCs with different constituents and mixing ratios were prepared and their characteristics were investigated. While the stable NLCs were made when cetyl palmitate (CP) or glyceryl monosterate (GMS) was used as a solid lipid, the phase separation occurred in the NLCs consisting of stearic acid. Particle sizes of the NLCs were several hundreds of nanometers and the size decreased with increasing the ratio of solvent to lipid. It was examined from DSC thermogram and anisotropy test that the degree of crystallinity of the lipid phase decreased and the lipid matrix became less ordered when octyldodecanol, a long chain fatty alcohol, was added into the solid lipid. The oxidative stability of ${\alpha}$-tocopherol in NLC was remarkably improved compared to that in solution or emulsion under high temperature ($45^{\circ}C$) and UV radiation, which was verified through DPPH test and peroxide value measurement.