臨界点附近における溶液の音吸収について (1)
1956 年 25 巻 8 号 p. 346-349
詳細
1956 年 25 巻 8 号 p. 346-349
The ultrasonic absorption for many binary liquid systems, nitrobenzen-hexane, nitrobenzen-fuel oil, nitrobenzen-transformer oil, methylalcohol-hexane, ethylalcohol-fuel oil, methylethyl-keton-liquid paraffin, acetone-transformer oil, which have the upper critical solution temperature, has been measured by the pulse technique at the frequencies 0.98, 1.98, 3.00, 5.00, 6.00, 7.02, 9.02, 10.0, 11.0, 14.0MC.
From the concentration, temperature and frequency dependence of absorption coefficient it is made clear that the contribution of clusters to the absorption is for almost all systems the greatest at the concentration for which the solubility curve shows maximum and becomes smaller as the temperature rises, and the relaxation frequencies due to the clusters are in or near the range of frequencies employed.
