Microinhomogeneity for Aqueous Mixtures of Water-miscible Organic Solvents
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概要
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Mixing states for aqueous solutions of water-miscible organic solvents, acetonitrile and 1,4-dioxane, have been investigated at the molecular level by means of small-angle neutron scattering (SANS) and NMR relaxation. It has been shown that the organic solvent and water molecules are inhomogeneously mixed each other at the molecular level, although their mixtures are homogeneous at the macroscopic scale. Thus, both organic solvent clusters and water clusters coexist in the mixtures. The present investigation has also revealed that the microinhomogeneity of acetonitrile-water and 1,4-dioxane-water mixtures is gradually enhanced by cooling or adding salts toward phase separation. Based on the results, the effect of microinhomogeneity for solvent mixtures on chemical reactions was considered.
- 公益社団法人 日本セラミックス協会の論文
著者
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Otomo Toshiya
Institute For Material Research Tohoku University
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Takamuku Toshiyuki
Department Of Chemistry And Applied Chemistry Faculty Of Science And Engineering Saga University
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MATSUGAMI Masaru
Department of General Education, Kumamoto National College of Technology
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NOGUCHI Yasukuni
Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University
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NAKANO Miki
Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University
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IWASE Hiroki
Quantum Beam Science Directorate, Japan Atomic Energy Agency (JAEA)
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OTOMO Toshiya
Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)
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