非イオン界面活性剤による均質で細かい乳化滴を持つO/Wエマルションの生成機構
1981 年 30 巻 1 号 p. 38-43
詳細
1981 年 30 巻 1 号 p. 38-43
As emulsion is non-equilibrium state, the technique of emulsification greatly affects the droplet size and its distribution of emulsion. When it is tried to form stable O/W emulsion by nonionic surfactants, the agent-in-oil method dissolving the surfactants in the oil phase is generally adopted.
In this paper, the reasons, which this method is desirable for forming homogeneous O/W emulsion, were investigated from the soluble state of surfactants-water-oil system.
As the results, it was shown that homogeneous O/W emulsions were formed under the conditions appearing oil-continuous phase-liquid crystalline phase-white gel emulsion-O/W emulsion in the process of emulsification. And it was indicated the possibility to decrease the difference of quality due to manufacturers by utilizing this emulsification method.
The structures of the liquid crystal and the gel which exsist in the process of emulsification were determined by X-ray low angle diff ractometer and electron microscope. And the mechanism forming a homogeneous O/W emulsion was elucidated.
