Solvent effect on the adsorption of 1-octadecanol at oil/water interface.
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概要
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In order to study the effect of solvent on the adsorption at interfaces, interfacial tension was measured as a function of temperature and compositon for the systems of water and solutions of 1-octadecanol in cyclohexane, cyclohexene, mesitylene, toluene, and benzene. The interfacial density of 1-octadecanol and the entropy and energy of interface formation were calculated thermodynamically. It was found that cyclohexane causes a significant adsorption of 1-octadecanol and marked decreases in the entropy and energy changes, giving rise to phase transition from expanded to condensed film, while benzene, toluene, and mesitylene cause only a slight adsorption and small decrease in thermodynamic quantities. Cyclohexene was found to give rise to an intermediate adsorptive behavior of 1-octadecanol. The results were interpreted in terms of the mutual solubility between water and solvents and that of 1-octadecanol in the solvents.
- 公益社団法人 日本化学会の論文
著者
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Aratono Makoto
Department Of Chemistry Faculty Of Sciences Kyushu University
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Motomura Kinsi
Department Of Chemistry Faculty Of Science Kyushu University
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Matuura Ryohei
Department of Chemistry Faculty of Science Kyushu University
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Matubayasi Norihiro
Department of Chemistry, Faculty of Science, Kyushu University
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Matubayasi Norihiro
Department of Chemistry, Faculty of Science, Kyushu University 33
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Ikenaga Takayuki
Department of Chemistry, Faculty of Science, Kyushu University 33
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