中国物理B ›› 2016, Vol. 25 ›› Issue (7): 76801-076801.doi: 10.1088/1674-1056/25/7/076801
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
Skin formation in drying a film of soft matter solutions: Application of solute based Lagrangian scheme
Ling Luo(罗凌), Fanlong Meng(孟凡龙), Junying Zhang(张俊英), Masao Doi
- 1 School of Physics and Nuclear Energy Engineering Beihang University, Beijing 100191, China;
2 Center of Soft Matter Physics and its Applications Beihang University, Beijing 100191, China;
3 Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, United Kingdom
Skin formation in drying a film of soft matter solutions: Application of solute based Lagrangian scheme
Ling Luo(罗凌)1,2, Fanlong Meng(孟凡龙)3, Junying Zhang(张俊英)1, Masao Doi2
- 1 School of Physics and Nuclear Energy Engineering Beihang University, Beijing 100191, China;
2 Center of Soft Matter Physics and its Applications Beihang University, Beijing 100191, China;
3 Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, United Kingdom
摘要：
When a film of soft matter solutions is being dried, a skin layer often forms at its surface, which is a gel-like elastic phase made of concentrated soft matter solutions. We study the dynamics of this process by using the solute based Lagrangian scheme which was proposed by us recently. In this scheme, the process of the gelation (i.e., the change from sol to gel) can be naturally incorporated in the diffusion equation. Effects of the elasticity of the skin phase, the evaporation rate of the solvents, and the initial concentration of the solutions are discussed. Moreover, the condition for the skin formation is provided.
中图分类号: (Evaporation and condensation of liquids)
- 68.03.Fg