滑移边界对含表面活性剂超薄液膜去湿特性的影响

doi:10.3969/j.issn.0438-1157.2012.08.024

化工学报 ›› 2012, Vol. 63 ›› Issue (8): 2507-2517.DOI: 10.3969/j.issn.0438-1157.2012.08.024

滑移边界对含表面活性剂超薄液膜去湿特性的影响

叶学民，沈雷，李春曦

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:2012-01-06 修回日期:2012-03-27 出版日期:2012-08-05 发布日期:2012-08-05
通讯作者: 叶学民
基金资助:
国家自然科学基金;教育部中央高校基本科研业务费

Effect of slip boundary conditions on dewetting dynamics of ultrathin films covered by insoluble surfactants

YE Xuemin，SHEN Lei，LI Chunxi

Received:2012-01-06 Revised:2012-03-27 Online:2012-08-05 Published:2012-08-05
Contact: Ye XueMin

摘要/Abstract

摘要： 针对预置在固体基底上含非溶性表面活性剂的超薄液膜去湿过程，基于滑移边界条件下的液膜厚度和表面活性剂浓度的非线性演化方程组，采用PDECOL程序对液膜去湿过程进行了数值模拟，分析了不同滑移尺度对含有内源和外源表面活性剂去湿特性的影响。研究表明，滑移边界对去湿过程的影响与表面活性剂初始分布密切相关，且不同平衡液膜厚度下滑移尺度的影响存在较大差异；总体上滑移边界促使超薄液膜趋于稳定，特别是当平衡液膜厚度较小时，滑移边界可有效控制去湿过程的发生；对于Spinodally稳定液膜，滑移边界对外源性情况的影响远大于内源性情况。

关键词: 滑移边界, 去润湿, 超薄液膜, 非溶性表面活性剂

Abstract: The dewetting of ultrathin liquid films in the presence of insoluble surfactant monolayer was studied.Under slip boundary conditions，coupled nonlinear evolution equations for film thickness and surfactant concentration based on lubrication theory were used.The dewetting evolution of films was simulated using PDECOL program，and the effects of slip length on dewetting dynamics，including endogenous and exogenous surfactant cases were investigated.Numerical results showed that the impact of slip boundary on dewetting process was closely related to initial surfactant distribution，and was obviously different under various equilibrium film thicknesses.Slip boundary generally played a role of improving the stability of ultrathin insoluble surfactant-covered films，and especially for small equilibrium film thickness，slip boundary could restrain the dewetting processes effectively.For spinodally stable films，the effect of slip boundary on exogenous surfactant dewetting was more noticeable than that on endogenous surfactant case.

Key words: slip boundary, dewetting, ultrathin films, insoluble surfactant

中图分类号:

TQ021，O363

叶学民，沈雷，李春曦. 滑移边界对含表面活性剂超薄液膜去湿特性的影响[J]. 化工学报, 2012, 63(8): 2507-2517.

YE Xuemin，SHEN Lei，LI Chunxi. Effect of slip boundary conditions on dewetting dynamics of ultrathin films covered by insoluble surfactants[J]. CIESC Journal, 2012, 63(8): 2507-2517.

参考文献 18

[1]	Li Zhen(李振),Hu Guohui(胡国辉),Zhou Jijie(周继杰)， Zhou Zhewei (周哲玮). Effects of Elasticity of Substrate on Dewetting Process of Evaporating Ultra-Thin Liquid Film[J]. Chinese Journal of Theoretical and Applied Mechanics(力学学报),2011,43(4): 599-706
[2]	Ye Xuemin(叶学民),Wang Songling(王松岭),Li Chunxi(李春曦),Zhang Runpan(张润盘). Instability of Evaporating or Condensing Sheared Liquid Films Under Thermal Non-equilibrium Effect [J]. Proceedings of the CSEE(中国电机工程学报),2009,29(2): 75-80
[3]	Sun Y H,Chan W K,Chen G D. Slip Effect for Thin Liquid Film Spreading Characteristics[J]. Proceedings of IMechE Part J: J. Engineering Tribology,2006,220: 87-93
[4]	Craster R V,Matar O K. Dynamics and Stability of Thin Liquid Films[J]. Reviews Of Modern Physics,2009,81: 1131-1189
[5]	Churaev N. V. Surface Forces in Wetting Films[J]. Advances in Colloid and Interface Science,2003,103(3): 197-218
[6]	Seemann R,Herminghaus S,Neto C,Schlagowski S,Podzimek D,Konrad R,Mantz H,Jacobs K. Dynamics and Structure Formation in Thin Polymer Melt Films[J]. Journal of Physics,2005,17:267-290
[7]	Gregorovich B V,Adamsons K,Lin L. Scratch and Mar and Other Mechanical Properties as a Function of Chemical Structure for Automotive Refinish Coatings[J]. Progress in Organic Coatings,2001,43(1-3):175-187
[8]	Schwartz L W,Roy R V,Eley R R,Petrash S. Dewetting Patterns in a Drying Liquid Film[J]. Journal of Colloid And Interface Science,2001,234(2)363-374
[9]	Wang Songling(王松岭),Li chunxi(李春曦),Ye xuemin(叶学民). Drop Spreading Characteristics Driven by Gradients of Temperature and Surfactant Concentration[J]. Journal of Chemical Industry and Engineering(化工学报). 2011,62(9): 2512-2519
[10]	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
[11]	Sha Yong(沙勇),Cheng Hong(成弘),Yu Yihong(于艺红),Yu guocong(余国琮). Flow Stability Analysis of Concentration-driven Marangoni Effect in Falling Film[J]. Journal of Chemical Industry and Engineering(化工学报),2003,54(10): 1361-1368
[12]	Mohamed S E,Yang I. Numerical Analysis of Laminar Flow in Micro-tubes with a Slip Boundary[J]. Energy Conversion and Management,2009,50: 1481-1490
[13]	Jiang Kai(蒋开),Chen Yunfei(陈云飞),Zhuang Ping(庄苹),Yang Juekuan(杨决宽),Tang Mingbing(唐明兵). Study of Nanoscale Boundary Slip Behavior of a Confined Liquid by Molecular Dynamic Simulation[J]. Tribology(摩擦学学报),2005,25(3): 238-242
[14]	Priezjev N J,Troian S M. Molecular origin and dynamic behavior of slip in sheared polymer films[J]. Phys. Rev. Lett. 2004,92(1):4
[15]	Zhang Y L,Craster R V,Matar O K. Surfactant Driven Flows Overlying a Hydrophobic Epithelium: Film Rupture in the Presence of Slip[J]. Journal of Colloid and Interface Science. 2003,264: 160-175.
[16]	Hu Guohui. Linear Stability of Ultrathin Slipping Films with Insoluble Surfactant[J]. Physics of Fluids,2005,17: 088105
[17]	Hu Guohui. Stability and Dynamics of Surfactant-covered Liquid Ultrathin Films with Slippage[J]. Journal of Hydrodynamics. Ser.B,2006,18(3): 363-366
[18]	Afsar-Siddiqui B,Luckham P F,Matar O K. Dewetting Behavior of Aqueous Ca
	tionic Surfactant Solutions on Liquid Films[J]. Langmuir,2004,20(18): 7575-7582

滑移边界对含表面活性剂超薄液膜去湿特性的影响

Effect of slip boundary conditions on dewetting dynamics of ultrathin films covered by insoluble surfactants

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