Oleic Acid-Based Gemini Surfactants with Carboxylic Acid Headgroups
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概要
- 論文の詳細を見る
Anionic gemini surfactants with carboxylic acid headgroups have been synthesized from oleic acid. The hydrocarbon chain is covalently bound to the terminal carbonyl group of oleic acid via an ester bond, and the carboxylic acid headgroups are introduced to the cis double bond of oleic acid via disuccinyl units. The surfactants exhibit pH-dependent protonation–deprotonation behavior in aqueous solutions. In alkaline solutions (pH 9 in the presence of 10 mmol dm–3 NaCl as the background electrolyte), the surfactants can lower the surface tension as well as form molecular assemblies, even in the region of low surfactant concentrations. Under acidic (pH 3) or neutral (pH 6–7) conditions, the surfactants are intrinsically insoluble in aqueous media and form a monolayer at the air/water interface. In this study, we have investigated physicochemical properties such as the function of the hydrocarbon chain length by means of static surface tension, pyrene fluorescence, dynamic light scattering, surface pressure–area isotherms, and infrared external reflection measurements.
- 日本油化学会の論文
著者
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Abe Masahiko
Department Of Internal Medicine Hokkaido Prefectural Haboro Hospital
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Sakai Kenichi
Department Of Mathematical And Life Sciences Graduate School Of Science Hiroshima University
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Matsumoto Mutsuyoshi
Department Of Materials Science And Technology Faculty Of Industrial Science And Technology Tokyo Un
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Sakai Hideki
Department Of Nephro-urology Nagasaki University Graduate School Of Biomedical Sciences
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Matsuda Wataru
Department Of Physical Electronics Tokyo Institute Of Technology
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Umemoto Naoki
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Sci
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Takamatsu Yuichiro
Miyoshi Oil & Fat Co., Ltd.
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Sakai Kenichi
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
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Takamatsu Yuichiro
Miyoshi Oil & Fat Co., Ltd.
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Umemoto Naoki
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
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Sakai Hideki
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
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Sakai Hideki
Department of Industrial Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Matsumoto Mutsuyoshi
Department of Materials Science and Engineering, Faculty of Industrial Science and Technology, Tokyo University of Science
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Matsuda Wataru
Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science
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