Static and Dynamic Contact Angles of Water on Polymeric Surfaces
| Autor: | Masayo Miyama, and Tsumuko Okuno, Yanxia Yang, Takeshi Yasuda, Hirotsugu K. Yasuda |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
chemistry.chemical_classification
Microscope Materials science Analytical chemistry Trimethylsilane Surfaces and Interfaces Polymer Condensed Matter Physics Mole fraction law.invention Contact angle chemistry.chemical_compound Hysteresis chemistry law Electrochemistry General Materials Science Wetting Composite material Spectroscopy Polymeric surface |
| Zdroj: | Langmuir. 13:5494-5503 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Static contact angle and dynamic (advancing and receding) contact angles of water on polymeric surfaces were investigated using microscope cover glasses coated with various plasma polymers of trimethylsilane and oxygen. By variation of the mole fraction of the TMS/oxygen mixture, glass surfaces having varying degrees of wettability were prepared. The advancing contact angle of a sessile droplet, which is independent of the droplet volume, is considered as the static contact angle of water on a polymeric surface, θS, which is a parameter characteristic to a polymeric surface. The dynamic contact angle of water refers to the contact angle of which three-phase contact line is in motion with respect to the surface. The dynamic advancing (immersing) contact angle, θD,a, and receding (emerging) contact angle, θD,r, were measured by the Wilhelmy balance. The difference between θD,a and θD,r is mainly due to the direction of dynamic force acting on the three-phase contact line. The discrepancy between the immersi... |
| Databáze: | OpenAIRE |
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