含表面活性剂液膜的去湿特性

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (04): 572-578.

含表面活性剂液膜的去湿特性

李春曦，沈雷，叶学民，童家麟

（华北电力大学电站设备状态监测与控制教育部重点实验室，河北保定 071003)

收稿日期:2012-06-11 出版日期:2013-04-28 发布日期:2013-04-28
基金资助:
国家自然科学基金（10972077，11202079），中央高校基本科研业务费专项基金（10MG33）资助项目

Investigation on Dewetting Dynamics of Thin Liquid Film Containing Insoluble Surfactant

LI Chun-Xi, SHEN Lei, YE Xue-Min, TONG Jia-Lin

(Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Baoding 071003, Hebei, China)

Received:2012-06-11 Online:2013-04-28 Published:2013-04-28

摘要/Abstract

摘要： 针对存在壁面滑移的含非溶性表面活性剂液膜在固体表面的去湿过程，应用基于润滑理论建立的液膜厚度及表面活性剂浓度的演化方程组，采用PDECOL程序对液膜演化历程进行了数值模拟，并分析了各特征参数对去湿特性的影响.结果表明，Marangoni效应对垂直方向上液膜厚度的变化影响微弱，液膜厚度的变化由分离压及毛细力所主导；Marangoni数对最终形成的去湿结构的影响并不显著，减小毛细力数则有助于抑制去湿过程的发展；增大滑移系数可以加速去湿进程，而最终形成的去湿结构明显缩小；增大平衡液膜厚度，液膜表面变形程度减小，液膜厚度逐渐趋于平稳.

关键词: 表面活性剂, 薄液膜, 去湿现象, 分离压, 数值模拟

Abstract: Under slip boundary conditions, the dewetting of thin liquid films in the presence of insoluble surfactant monolayer was considered. Coupled nonlinear governing equations for the film thickness and surfactant concentration based on boundary layer theory were employed. The dewetting evolution of films was simulated using PDECOL program and the numerical results were presented, while the effects of characteristic parameters on dewetting process were discussed. The results show that the impact of Marangoni effect on the change rate of films thickness is not significant in vertical direction, the change rate of films thickness is dominated by disjoining pressure and capillary stress. The influence of Marangoni number M on static dewetted structures is not significant, and decreasing capillary number C will suppress the dewetting phenomenon effectively. Increasing slip coefficient β will accelerate the dewetting process and shorten the dewetted structures. Increasing equilibrium film thickness lc will lessen the deformation degree of surface and thereby lead the film thickness to be stabilized.

Key words: insoluble surfactant, thin films, dewetting, disjoining pressure, numerical simulation

中图分类号:

李春曦, 沈雷, 叶学民, 童家麟. 含表面活性剂液膜的去湿特性[J]. 上海交通大学学报（自然版）, 2013, 47(04): 572-578.

LI Chun-Xi, SHEN Lei, YE Xue-Min, TONG Jia-Lin. Investigation on Dewetting Dynamics of Thin Liquid Film Containing Insoluble Surfactant[J]. Journal of Shanghai Jiaotong University, 2013, 47(04): 572-578.

参考文献

［1］温诗铸，黄平. 界面科学与技术［M］. 北京：清华大学出版社，2011.
［2］Xue L J, Han Y C. Inhibition of dewetting of thin polymer films［J］. Progress in Materials Science, 2012, 57(6): 947979.
［3］Craster R V, Matar O K. On autophobing in surfactantdriven thin films［J］. Langmuir, 2007, 23(5): 25882601.
［4］Craster R V, Matar O K. Dynamics and stability of thin liquid films［J］. Reviews of Modern Physics, 2009, 81(3): 11311189.
［5］Ophelia K C T, Thomas P R. Polymer thin films［M］. Singapore: World Scientific, 2008.
［6］王松岭，李春曦，叶学民. 含表面活性剂液滴的受热铺展特性［J］. 中国电机工程学报, 2011, 31(14): 6370.
WANG Songling, LI Chunxi, YE Xuemin. Spreading of a liquid drop containing insoluble surfactant driven by thermocapillary［J］. Proceedings of the CSEE, 2011, 31(14): 6370.
［7］Starov V M, Velarde M G. Surface forces and wetting phenomena［J］. Journal of Physics, 2009, 21(46): 121131.
［8］Bhakta A, Ruchkenstein E. Decay of standing foams: Drainage, coalescence and collapse［J］. Advances in Colloid and Interface Science, 1997, 70(18): 1124.
［9］Warner M R E, Craster R V, Matar O K. Dewetting of ultrathin surfactantcovered films［J］. Physics of Fluids, 2002, 14(11): 40404054
［10］叶学民，王松岭，张营，等. 剪切液膜表面波的动力学特征和不稳定性［J］. 上海交通大学学报, 2008, 42(8): 12431246.
YE Xuemin, WANG Songling, ZHANG Ying, et al. Hydrodynamics and istability of sear iterfacial wves of lquid flms［J］. Journal of Shanghai Jiaotong University, 2008, 42(8): 12431246.
［11］Baumchen O, Jacobs K. Slip effects in polymer films［J］. Journal of Physical, 2010, 22(3): 140.
［12］Hu Guohui. Linear stability of ultrathin slipping films with insoluble surfactant［J］. Physics of Fluids, 2005, 17(8): 088105.1088105.4.

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