摘要
Videomicroscopy was used to observe dissolution in water of drops of neat commercial nonionic surfactants and mixtures of pure nonionic surfactants. The time required for complete dissolution of such drops was greater at temperatures slightly below their cloud points than at lower temperatures, in contrast to behavior found for pure nonionic surfactants. Moreover, emulsification within and/or at the surfaces of surfactant drops was often observed at temperatures just below their cloud points. During the latter part of the dissolution process for these conditions, the rate of dissolution slowed, and drops became elongated and formed conical projections, apparently of the lamellar liquid crystalline phase. In some experiments, the projections emitted jets of small droplets or particles. While aspects of these intriguing phenomena are not completely understood, some interpretation is given, which makes use of relevant ternary phase diagrams.
摘要译文
使用视频显微镜观察纯净的商业非离子表面活性剂和纯非离子表面活性剂混合物的液滴的水溶液。与发现的行为相比，这种滴剂的完全溶解所需的时间在稍低于其浊点的温度下比在较低温度下更高对于纯非离子表面活性剂，此外，通常在温度刚好低于其浊点的情况下观察表面活性剂滴下表面和/或表面的乳化。在这些条件的溶解过程的后期部分，溶解速率减慢，细长形成的锥形突起，显然是层状液晶相。在一些实验中，投影发射出小滴或颗粒的喷射。尽管这些有趣的现象的方面还没有被完全理解，但是给出了一些解释，这有利于相关三元相图
Bing-Hung Chen[1][a]; Clarence A Miller[a]; Peter R Garrett[b]. Dissolution of nonionic surfactant mixtures[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2001,183-185: 191–202