Laser diagnostics of reverse microemulsions: Influence of the size and shape of reverse micelles on the Raman spectrum on the example of water/AOT/cyclohexane system
| Autor: | Sergey A. Burikov, Ivan V. Plastinin, Tatiana A. Dolenko |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Cyclohexane Analytical chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences Micelle chemistry.chemical_compound symbols.namesake Dynamic light scattering Materials Chemistry Microemulsion Physics::Chemical Physics Physical and Theoretical Chemistry Spectroscopy Spectral bands 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Condensed Matter::Soft Condensed Matter Raman laser chemistry symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 325:115153 |
| ISSN: | 0167-7322 |
| DOI: | 10.1016/j.molliq.2020.115153 |
| Popis: | In this study, the influence of the size and shape of reverse micelles in water/AOT-Na/cyclohexane microemulsions on the spectral characteristics of vibrational spectra was studied using Raman laser spectroscopy and method of dynamic light scattering. The sensitivity of the spectral bands of stretching vibrations of OH groups of water molecules and SO3 groups of AOT anions to the processes of self-organization of surfactants in microemulsions was established and explained. It is proposed to use this sensitivity of the OH and SO spectral bands of the Raman spectrum of microemulsions to create a method of determining the size of reverse micelles using Raman spectra. For this purpose, calibration curves of the spectral characteristics of these bands on the size of the reverse micelles were obtained. It was shown that the developed method can provide the best accuracy of determining the size of spherical reverse micelles 4.4%. The proposed method of laser diagnostics of microemulsions can also be applied to microemulsions with another composition. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect