Superspreading of Trisiloxane Surfactant Mixtures on Hydrophobic Surfaces 2. Interaction and Spreading of Aqueous Trisiloxane Surfactant−N-Alkyl-Pyrrolidinone Mixtures in Contact with Polyethylene
| Autor: | Milton J. Rosen, Yongfu Wu and |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Interfacial pressure Surfaces and Interfaces Polyethylene Condensed Matter Physics Surface tension symbols.namesake chemistry.chemical_compound chemistry Pulmonary surfactant Chemical engineering Hydrophobic surfaces Polymer chemistry Electrochemistry Gibbs–Helmholtz equation symbols General Materials Science sense organs skin and connective tissue diseases Spectroscopy Alkyl |
| Zdroj: | Langmuir. 18:2205-2215 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la0113318 |
| Popis: | On the basis of the results of interfacial adsorptions of an ethoxylated trsiloxane(L77) and its mixtures with various N-alkyl-pyrrolidinones, the changes in interfacial pressure at the air/aqueous solution, polyethylene/aqueous solution, and air/polyethylene interfaces caused by the surfactant mixture solutions have been evaluated by use of the Gibbs equation. At the air/aqueous solution interface, the change in the surface tension, (ΔγLA), is always positive, indicating that there is no effect that could enhance spreading at this interface upon the addition of N-alkyl-pyrrolidinones to the trisiloxane surfactant solution. At the polyethylene/aqueous solution interface, the change in interfacial pressure, (ΔπSL), can be positive when N-alkyl-pyrrolidinones are mixed at a certain ratio, indicating that the mixtures can show a spreading enhancement effect at this interface. Compared with the changes at the air/aqueous solution interface and the polyethylene/aqueous solution interface, the change in interfa... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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