Two-stage coalescence in double emulsions
Two-stage coalescence in double emulsions
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DOI：
10.1021/la0349323
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发表时间：
2003-09-16
期刊：
影响因子：
3.9
通讯作者：
Arauz-Lara, JL
中科院分区：
文献类型：
--
作者：
González-Ochoa, H;Ibarra-Bracamontes, L;Arauz-Lara, JL
我们报告的两个阶段的聚结现象的水滴，封装在油珠，朝向一个连续的水相的观察。这个过程是通过快速数字视频显微镜一步一步地捕捉到的。在第一阶段中，形成瞬时水包水乳液：包裹水滴的油剥离，使水滴浸没在由油和表面活性剂的膜支撑的连续水相中。油的回缩发生在1 ms的时间跨度内。在第二阶段，覆盖水滴的膜磨损，水滴破裂，将其内容物释放到连续的水相。第二阶段发生在几十毫秒的时间跨度内。
We report the observation of two-stage coalescence phenomena of water droplets, encapsulated in oil globules, toward a continuous water phase. The process is captured step by step by fast digital video microscopy. In the first stage, a transient water in water emulsion is formed: the oil enveloping the water droplet peels off, leaving the droplet immersed in the continuous water phase supported by a film of oil and surfactants. The retraction of the oil occurs in a time span of 1 ms. In the second stage, the film covering the water droplet wears and the drop breaks, releasing its contents to the continuous water phase. The second stage occurs in a time span of a few tens of milliseconds.