EFFECTS OF LONDON-VANDERWAALS AND ELECTRIC DOUBLE-LAYER FORCES ON THE THINNING OF A DIMPLED FILM BETWEEN A SMALL DROP OR BUBBLE AND A HORIZONTAL SOLID PLANE
EFFECTS OF LONDON-VANDERWAALS AND ELECTRIC DOUBLE-LAYER FORCES ON THE THINNING OF A DIMPLED FILM BETWEEN A SMALL DROP OR BUBBLE AND A HORIZONTAL SOLID PLANE
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DOI：
10.1016/0021-9797(84)90158-9
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发表时间：
1984-01-01
影响因子：
9.9
通讯作者：
CHEN, JD
中科院分区：
文献类型：
--
作者：
CHEN, JD
当小液滴或气泡接近水平固体表面时，一层薄液膜被捕获并在它们之间形成凹坑。一个模型的轴对称，酒窝薄膜，包括伦敦范德华力和双电层力的影响。根据分离压力的这两个分量的符号和强度，凹陷的薄膜形成平坦的薄膜或在边缘处破裂。形成平膜或破裂所需的时间以及平膜厚度也取决于这两个组分。一些定性的比较表明，所提出的计算与文献中的实验结果是一致的。讨论了固体表面润湿性的相关研究。
When a small drop or bubble approaches a horizontal solid surface, a thin liquid film is trapped and forms a dimple between them. A model is developed for an axisymmetric, dimpled thinning film to include the effects of London-van der Waals and electric double layer forces. Depending on the signs and strength of these two components of disjoining pressure, the dimpled thinning film forms a flat film or ruptures at the rim. The time required to form a flat film or rupture and the flat film thickness are also dependent upon these two components. Some qualitative comparisons show that the calculations presented are consistent with experimental results available in the literature. Related studies on the wettability of solid surfaces are discussed.