Partition Coefficients of 1-Alkanols between Water and DDAB Vesicle Membrane Determined by Differential Conductivity Method
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概要
- 論文の詳細を見る
The partition coefficients of 1-alkanols between water and didodecyldimethylammonium bromide (DDAB) vesicle membrane, and the change of the degree of counter-ion dissociation on DDAB vesicle caused by the solubilization of 1-alkanols were determined from electric conductivity measurements. A good linear relationship was obtained between logarithmic value of the partition coefficient and carbon number of alkyl chain in 1-alkanols. The standard transfer free energy change per methylene group was evaluated from the slope of this straight line. On the other hand, the effect of 1-alkanols on the degree of counter-ion dissociation was independent of carbon number of 1-alkanols. Comparing the results of the present system with those of sodium dodecylsulfate (SDS) micelle/1-alkanol system, it was found that the interior of DDAB vesicle membrane is more hydrophobic than that of SDS micelles. Furthermore, the increase in counter-ion dissociation caused by solubilized 1-alkanols was much lesser for DDAB vesicles than SDS micelles.
- 日本油化学会の論文
著者
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MANABE Masahiro
Department of Hematology, Osaka City General Hospital
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KAWAMURA Hideo
Department of Applied Chemistry and Biotechnology, Niihama National College of Technology
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KATSUURA Hajime
Department of Applied Chemistry and Biotechnology, Niihama National College of Technology
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SHIOMI Masaki
Department of Applied Chemistry and Biotechnology, Niihama National College of Technology
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Manabe Masahiro
Department Of Hematology Saiseikai Nakatsu Hospital
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Katsuura H
Department Of Chemistry Faculty Of Science Kyushu University 33
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Myoujou Masako
Department of Applied Chemistry and Biotechnology, Niihama National College of Technology
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Manabe Masahiro
Department of Applied Chemistry and Biotechnology, Niihama National College of Technology
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