Spreading of oil drops under a solvent vapor: influence of Marangoni effect

Spreading of oil drops under a solvent vapor: influence of Marangoni effect
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油滴在溶剂蒸气下的扩散：马兰戈尼效应的影响

DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
A. Cazabat
A. Cazabat
中科院分区：
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文献类型：
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作者：
P. Carles;A. Cazabat

文献摘要

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研究了硅油液滴与溶剂（己烷、环己烷、十氢萘）蒸气接触时的铺展动力学。观察到的行为与理想系统中预期和实际观察到的行为完全不同。首先，污染物引起表面张力梯度，其可以根据其方向来抵消或加速扩散。在第二阶段中，液滴的表面变得更加均匀，并且液滴可以重新展开或缩回，这再次取决于溶剂的表面张力。
The spreading dynamics of a silicone oil (PDMS) drop in contact with the vapor of a solvent (hexane, cyclohexane, decaline) were studied. The observed behaviors are completely different from the ones that are expected and indeed observed in ideal systems. First, the contamination induces a surface tension gradient which may counteract or accelerate the spreading, depending on its direction. In a second stage, the surface of the drop becomes more homogeneous and the drop may either resume spreading or retract, again depending on the surface tension of the solvent.