Viscosities of aqueous solutions of alkanoic acids.
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概要
- 論文の詳細を見る
Viscosities of aqueous solutions of alkanoic acids including formic acid were measured by an Ostwald type viscometer at 15, 25, and 35 °C, and the viscosity <I>B</I>-coefficient and the temperature dependence of <I>B</I>-coefficient, <I>dB</I>⁄<I>dT</I>, were calculated. From the signs and the magnitudes of <I>B</I><SUB>st</SUB>, increment of <I>B</I>-coefficient arising from the change of water structure, and <I>dB</I>⁄<I>dT</I>, it was concluded that formic acid was a hydrophilic structure breaker, while acetic acid was neither a structure maker nor a structure breaker. Both propionic acid and butyric acid were the hydrophobic structure makers. The mechanism of structure breaking effect of carboxyl group was briefly discussed.
- 公益社団法人 日本化学会の論文
著者
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Miyajima Koichiro
Faculty Of Pharmaceutical Science Kyoto University
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Nakagaki Masayuki
Faculty of Living Science Osaka City University
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Sawada Masahiro
Faculty of Pharmaceutical Sciences, Kyoto University
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