Highly Concentrated Cubic-Phase Emulsions : Basic Study on D-Phase Emulsification using Isotropic Gels

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概要

• 論文の詳細を見る

• In a hydrophilic octaethylene glycol dodecyl ether (C12EO8)-water system, a micellar cubic phase is formed below 20°C. Upon addition of decane, the maximum temperature of micellar cubic phase (I1) is increased, and, moreover, the hexagonal liquid crystal region changes to the I1 phase. Beyond the solubilization limit of decane in the I1 phase, highly viscous and gel-like O/I1-emulsions are formed in the two-phase region of I1+O. In the case of a surfactant mixture (C12EO4.8) containing C12EO8+C12EO3, a single I1 phase region is not present in a pseudo ternary phase diagram of water/C12EO4.8/decane system, but an I1+O region appears in the oil-rich region. C12EO4.8 forms lamellar liquid crystal in the aqueous system but C12EO3 in the mixture is dissolved in oil and the mixing fraction of C12EO8 in the surfactant aggregate increases as oil is added. Finally, a two-phase region of I1+O appears. It is considered that the O/I1-emulsion or gel based on the cubic phase corresponds to the gel appeared in the so-called D-phase emulsification process. Upon addition of alkyl polyol such as glycerol or 1,3-butanediol, the transparency of the emulsion in the I1+O region increases because the difference in refractive index between the cubic phase and excess oil is decreased. The maximum temperature of the I1 phase decreases with increasing polyol content. Consequently, the addition of alky polyols is not crucial to form O/I1 gels in an oil-rich region.

• 日本油化学会の論文
• 2001-08-01

著者

• Tanimoto Masayuki

  Division Of Artificial Environment And Systems Graduate School Of Engineering Yokohama National Univ

• Kunieda H

  Graduate School Of Environment And Information Sciences Yokohama National University

• Rodriguez C

  Yokohama National Univ. Kanagawa Jpn

• KUNIEDA Hironobu

  Division of Artificial Environment and Systems, Graduate School of Engineering, Yokohama National Un

• SHIGETA Kazuki

  Division of Artificial Environment and Systems, Graduate School of Engineering, Yokohama National Un

• RODRIGUEZ Carlos

  Division of Artificial Environment and Systems, Graduate School of Engineering, Yokohama National Un

• Shigeta Kazuki

  Division Of Artificial Environment And Systems Graduate School Of Engineering Yokohama National Univ

関連論文

• Phase Behavior of Polyoxyethylene Phytosterol / Polyoxyethylene Dodecylether / Water Systems
• Effect of Added Perfume on the Stability of Discontinuous Cubic Phase
• Highly Concentrated Emulsions Based on the Reverse Micellar Cubic Phase
• Rheological Behavior of Wormlike Micellar Solutions in Mixed Nonionic Systems of Polyoxyethylene Phytosterol-Polyoxyethylene Dodecyl Ether
• Highly Concentrated Cubic-Phase Emulsions : Basic Study on D-Phase Emulsification using Isotropic Gels

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