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非极性液体膜在固体表面上的存在,使固-水-空气体系界面自由能发生变化。其变化的大小与膜的种类,厚度及结构有关。这类膜的性质可能与其液相本体不同。曾对硫黄上的水及水中硫黄上的正烷烃(己烷至十六烷系列)测量了接触角。在这第二体系的实验中,接触角及附着力的测量,是以被正烷烃所润湿了的硫黄表面上与气泡接触的次数为函数来确定的。在气泡“接触—拉开”一
The presence of a non-polar liquid film on the solid surface changes the free energy of the solid-water-air interface. The size of the changes with the type of film, thickness and structure. The nature of this type of membrane may differ from its bulk liquid. The contact angle has been measured for water on sulfur and normal paraffins on sulfur in water (hexane to hexadecane series). In the experiments of this second system, the measurement of contact angle and adhesion was determined as a function of the number of contact with air bubbles on the surface of sulfur that is wetted by n-alkanes. In the bubble “contact - pull open” one