CHARACTERISTIC PROPERTIES OF LECITHIN AS A SURFACTANT |
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| Authors: | Kozo Shinoda Teruhisa Kaneko |
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| Institution: | 1. Department of Physical Chemistry , Faculty Of Engineering Yokohama National University , Tokiwadai, Yokohama, 240, Japan;2. Pola Research &3. Development Laboratories , 27-1, Takashimadai, Yokohama, 221, Japan |
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| Abstract: | Characteristic solution properties of lecithin were studied in 1) water+propanol/lecithin/hexadecane and 2) ethanol/lecithin/ hexadecane systems. 1) Solvent property of water changes by added alcohol and the hydrophile-lipophile property of lecithin is balanced in 13 wt% propanol aq.-hexadecane system. Three liquid phases, i.e. aqueous alcohol, lecithin and hexadecane are found. The volume fraction of the lecithin phase increases with its concentration and at 2.3 wt%/system, all solvent molecules are swelled and one microemulsion phase is obtained. 2) In ethanol/ lecithin/hexadecane system, lecithin is also insoluble in the solvent, and swells a large amount of hexadecane. |
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