Study of adsorption of nonionic surfactants at the liquid-solid interface by FTIR/CIR
| Autor: | Claudia R. E. Mansur, Elizabete F. Lucas, Márcia R. Benzi |
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| Rok vydání: | 2001 |
| Předmět: |
Aqueous solution
Polymers and Plastics Chemistry Hydrotrope Infrared spectroscopy Concentration effect General Chemistry Surfaces Coatings and Films Adsorption Pulmonary surfactant Chemical engineering Attenuated total reflection Polymer chemistry Materials Chemistry Fourier transform infrared spectroscopy |
| Zdroj: | Journal of Applied Polymer Science. 82:1668-1676 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.2007 |
| Popis: | Fourier transform infrared spectroscopy (FTIR), using the attenuated total reflectance (ATR) method, can be used to characterize the interface of a system. We investigated the adsorption at the liquid–solid interface of nonionic surfactant aqueous solutions with or without a hydrotropic agent. We studied monofunctional diblock copolymers of poly(ethylene oxide-propylene oxide) (PEO–PPO) as nonionic surfactants and sodium p-toluenesulfonate (NaPTS) as hydrotropic agent. The samples were analyzed by FTIR technique using the circular internal reflectance (CIR) accessory, which confirmed that the hydrotrope shifts the surfactant from the liquid–solid interface. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 1668–1676, 2001 |
| Databáze: | OpenAIRE |
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