Supercooling Ability of Solution

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  • 水溶液系における過冷却解消温度について
  • スイヨウエキケイ ニ オケル カレイキャク カイショウ オンド ニ ツイテ

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Abstract

For different concentrate solutions of several kinds of solute, the homogeneous nucleation temperature Th and the equilibrium melting point Tm were determined by using so-called emulsion method. The obtained Th and Tm for each solute dropped with concentration increasing, however, the relationship between both temperatures showed good linearity with different gradients depending on the kind of solute. That is, the relations could be expressed by an equation Th=a・Tm for each solute, of which the gradients a are considered to represent the degree of supercooling ability. The correlation between the a values for each solute and the chemical structure or hydrate characters was examined. As a result, the dynamic hydration number of solute was found to have a good correlation with the a value representing supercooling ability.

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