低浓度表面活性剂溶液在薄水层上的铺展：溶解度的影响。
Spreading of surfactant solutions over thin aqueous layers at low concentrations: Influence of solubility.
作者信息
Lee K S, Starov V M
机构信息
Department of Chemical Engineering, Loughborough University, Loughborough, LE11 3TU, UK.
出版信息
J Colloid Interface Sci. 2009 Jan 15;329(2):361-5. doi: 10.1016/j.jcis.2008.10.031. Epub 2008 Oct 29.
A small droplet of aqueous surfactant solution at concentration below CMC was deposited on a thin water layer. A moving circular wave in the centre was formed. The time evolution of the radius of the wave was monitored. Two surfactants of different solubility were used. It was shown that the time evolution of the moving front (i) proceeds in two stages: a fast first stage and slower second stage; (ii) the time evolution of the front motion substantially depends on the surfactant solubility. We suggest a qualitative explanation of the phenomenon, which reasonably agrees with our experimental observations.
将浓度低于临界胶束浓度（CMC）的一小滴表面活性剂水溶液滴在一层薄水层上。在中心形成了一个移动的圆形波。监测了波半径的时间演变。使用了两种溶解度不同的表面活性剂。结果表明，移动前沿的时间演变：（i）分两个阶段进行：第一阶段快，第二阶段慢；（ii）前沿运动的时间演变很大程度上取决于表面活性剂的溶解度。我们对这一现象提出了定性解释，这与我们的实验观察结果合理相符。
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