Ultrasonic Study on Dilute Aqueous Solutions of Diamines
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概要
- 論文の詳細を見る
Ultrasonic experiments were carried out on aqueous solutions of diamines (ethylenediamine, 1,3-propanediamine, 1,4-butanediamine, 1,5-pentanediamine, and 1,6-hexanediamine) by means of pulse technique in order to study solute-solvent interactions. Sound velocity and absorption coefficient were determined in the frequency range 15–45 MHz. The magnitude of absorption coefficient for each solution increased rapidly with concentration up to about 0.4 mol%. It is concluded that the initial rapid increase is attributed to the proton transfer in base equilibria. The absorption coefficient at the same molar concentration of each solution increases appreciably with the size of hydrocarbon chain from –(CH<SUB>2</SUB>)<SUB>2</SUB>– to –(CH<SUB>2</SUB>)<SUB>3</SUB>–. This is ascribed to the formation of icebergs around hydrocarbon groups.
- 公益社団法人 日本化学会の論文
著者
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Arakawa Kiyoshi
Research Institute Of Applied Electricity Hokkaido University
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Sasaki Katsutaka
Research Institute of Applied Electricity, Hokkaido University
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