Affiliation:
1. Department of Physics Kazan National Research Technological University Kazan 420015 Russian Federation
2. Institute of Physics Kazan Federal University Kazan 420008 Russian Federation
3. Department of Analytical Chemistry Kazan National Research Technological University Kazan 420015 Russian Federation
4. Chemistry of Interfaces Luleå University of Technology Luleå SE‐97187 Sweden
Abstract
AbstractWe studied the micellar and solubilizing properties of aqueous solutions of unfractionated rhamnolipids produced byPseudomonas aeruginosa. We used nuclear magnetic resonance (NMR) diffusometry, dynamic light scattering, and conductometry to measure the critical micelle concentration (CMC) of rhamnolipid solutions and determined the effective hydrodynamic radii of rhamnolipid monomers and micelles. Based on selective measurements of the self‐diffusion coefficients of molecules, performed by NMR diffusometry, the solubilizing properties of rhamnolipids were studied depending on their concentration in solution; aromatic hydrocarbons, benzene, toluene, ethylbenzene, and para‐xylene were taken as solubilizates. On the basis of the measurement results, we estimated the distribution coefficient of the solubilizate between the micellar (solubilized) and free (in the aqueous phase) states and the solubilizing capacity of rhamnolipid micelles.
Funder
Ministry of Science and Higher Education of the Russian Federation
Subject
General Materials Science,General Chemistry
Cited by
2 articles.
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