The sol-gel transition of sodium deoxycholate solutions under high pressures.

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概要

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• The effect of pressure on the sol-gel transition of sodium deoxycholate (SDC) solutions was investigated by the electric conductivity method up to 2000 atm in the temperature range from 10 to 65 °C. The gelation of SDC solutions is effected more easily at lower temperatures, at higher pressures, and at higher concentrations of SDC. The changes in the volume (Δ\bar<I>V</I><SUP>(αβ)</SUP>), the enthalpy (Δ\bar<I>H</I><SUP>(αβ)</SUP>), and the entropy (Δ\bar<I>S</I><SUP>(αβ)</SUP>) of gelation were calculated thermodynamically. The values for Δ\bar<I>V</I><SUP>(αβ)</SUP>, Δ\bar<I>H</I><SUP>(αβ)</SUP>, and Δ\bar<I>S</I><SUP>(αβ)</SUP> are all negative under the conditions of this experiment. Therefore, it is concluded that the gel formation of SDC is attributable to intermolecular hydrogen bonds.

• 公益社団法人 日本化学会の論文

著者

• Sugihara Gohsuke

  Department Of Chem.istry Faculty Of Science Fukuoka University

• Tanaka Mitsuru

  Department Of Cardiology Miyazaki Medical Association Hospital

• Kaneshina Shoji

  College of General Education, Kyushu University-01

• Ueda Toshiaki

  Department of Chemistry, Faculty of Science, Fukuoka University

• Kaneshina Shoji

  College of General Education, Kyushu University

• Tanaka Mitsuru

  Department of Chemistry, Faculty of Science, Fukuoka University

• Tanaka Mitsuru

  Department of Applied Chemistry, Faculty of Engineering, Tokushima University

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