电解质水溶液在丙酸十二铵-四氯化碳溶液中的增溶

表面活性剂在非极性溶剂中形成的反胶束在催化反应、光化学、蛋白质苹取分离等方面有着广泛的应用问．这些应用与反胶束的性质有着密切的关系，而增溶水后的反胶束其形状和大小都会发生很大的变化．增溶不同水量的反胶束的微极性、酸碱性、微勤度等已有不少文献报导［2－5］．一些不溶于非极性溶剂而溶于水的物质可以溶解在非极性溶剂中的反胶束核心水团中，这个现象被称为二次增溶．其中，电解质的二次增溶对于研究配体转换反应。酶催化反应问及改变反胶束内部的微环境有着十分重要的作用，Aebi和Weibush回首先研究了有水存在时N。CI在A…

Solubilization of Aqueous Solution of Electrolytes by Dodecylammonium Propionate in Carbon Tetrachloride

The limiting solubilization amount of aqueous solution of electrolytes, in cluding NaCl, KCl, NaBr, NaI, CaCl2 and Na2SO4 in carbon tetrachloride solution of dodecyla-mmoniu-m propoinate was determined as the added amount of aqueous solution at which turbidity began to be visible. All of the results showed that with increasing concentration of electrolytes, the limiting solubilization amount of aqueous electrolyte solution increased first followed by decreased. This phenomenon could be explained as follows. When electrolyte was present in water pool of reverse Ancelle, it makes easier for surfactant molecules that surrounding the water pool to migrate to organic phase because of salting-out effect, thus the reverse micelle was expanded. This effect increased with increase of electrolyte concentration. On the other hand, surfactant molecules migrating easier to organic phase implies that the force making surfactant molecules to stick on the surface of water pool became wealler. When electrolyte concentration increased to a certain extent, this force became too weak to keep the reverser micelle, thus the limiting solubilization amount of aqueous solution decreased. According to simplified spherical reyerse Ancelle model, the aggregation number as well as the radii of water pool of reverse Ancelle have been calculated for aqueous sodium chloride solution of different concentra tions. The results support the above explanation.