Surfactant Enhanced Spreading: Catanionic Mixture
| Autor: | Alix Barton, Nina Kovalchuk, Victor Starov, Anna Trybala |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
02 engineering and technology
010402 general chemistry 01 natural sciences law.invention Surface tension chemistry.chemical_compound Colloid and Surface Chemistry Pulmonary surfactant law Materials Chemistry Organic chemistry Physical and Theoretical Chemistry Crystallization Aqueous solution Chemistry Polyethylene Crystallisation 021001 nanoscience & nanotechnology Partial wetting Apparent contact angle Complete wetting 0104 chemical sciences Surfaces Coatings and Films Sulfonate Wetting transition Chemical engineering Wetting 0210 nano-technology Biotechnology |
| Zdroj: | Colloids and Interface Science Communications. 1:1-5 |
| ISSN: | 2215-0382 |
| DOI: | 10.1016/j.colcom.2014.05.003 |
| Popis: | The spreading behaviour of aqueous solutions of mixture of two surfactants sodium 1-decane sulfonate and dodecyltrimethylammonium bromide is investigated on two hydrophobic substrates. The solutions demonstrate rapid complete wetting on polyethylene film and only partial wetting on silanized glass. It is shown that the spreading behaviour depends crucially on the age of the mixture and is determined by the crystal growth affecting the surface tension of solution. An increase of surface tension with time results in an interesting phenomenon — a transition from complete to partial wetting, that is, a droplet of freshly prepared mixture first spreads completely but after some time the solution assembles into the droplet again. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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