Complex wetting phenomena in liquid mixtures: frustrated-complete wetting and competing intermolecular forces
Complex wetting phenomena in liquid mixtures: frustrated-complete wetting and competing intermolecular forces
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液体混合物中的复杂润湿现象：受挫完全润湿和竞争分子间力
DOI：
10.1088/0953-8984/13/21/317
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. Indekeu
中科院分区：
文献类型：
--
作者：
D. Bonn;E. Bertrand;N. Shahidzadeh;K. Ragil;H. Dobbs;A. Posazhennikova;D. Broseta;J. Meunier;J. Indekeu
我们对近期在与基础研究以及石油开采等工业应用相关的简单液体混合物中发现的复杂润湿状态进行了现象学综述。烷烃在水上呈现出一系列的两种润湿转变，从部分润湿到“受阻完全润湿”，最后到完全润湿：在微观和介观吸附的烷烃膜之间存在一阶的薄 - 厚转变，随后是向宏观润湿层的长程临界润湿转变。新的“受阻完全润湿”状态的存在源于分子间力的短程和长程成分之间的竞争，后者阻碍润湿。界面之间的有效长程力由德拜偶极和伦敦色散贡献组成，它们之间也可能相互竞争。在环境温度和压力下，伦敦成分最终是导致阻碍完全润湿的原因。
We give a phenomenological overview of recently discovered complex wetting states in simple liquid mixtures relevant to both fundamental research and industrial applications such as oil recovery. Alkanes on water show a sequence of two wetting transitions, from partial wetting to `frustrated-complete wetting', and finally to complete wetting: a first-order thin-thick transition between a microscopic and a mesoscopic adsorbed alkane film is followed by a long-range critical wetting transition to a macroscopic wetting layer. The existence of the new `frustrated-complete wetting' state follows from a competition between short-range and long-range components of the intermolecular forces, the latter opposing wetting. The effective long-range forces between interfaces consist of Debye dipolar and London dispersion contributions, which can also be in mutual competition. The London component is ultimately responsible for the frustration preventing complete wetting at ambient temperatures and pressures.