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Dynamic and molecular association in premicellar aqueous solutions of dicarboxylate amino acid-based surfactant as studied by 1H NMR
Department of Physics, Kazan National Research Technological University, Kazan, Russian Federation.
Institute of Physics, Kazan Federal University, Kazan, Russian Federation.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering. Institute of Physics, Kazan Federal University, Kazan, Russian Federation.ORCID iD: 0000-0002-6810-1882
2022 (English)In: Magnetic Resonance in Chemistry, ISSN 0749-1581, E-ISSN 1097-458X, Vol. 60, no 3, p. 359-368Article in journal (Refereed) Published
Abstract [en]

We examined a series of amino acid-based surfactants with two carboxylic groups separated by a spacer of one, two, or three carbon atoms with sodium and calcium counterions in the premicellar concentration region near the CMC. 1H NMR spectroscopy and NMR diffusometry techniques were used to study the local environment, association and translational dynamics of the surfactant’s molecules. We measured the self-diffusion coefficients of the micelles, calculated the effective hydrodynamic radii, and determined the temperature region in which the premicelles exist. With an increase in temperature from 295 to 335 K, the premicellar state of the surfactant is replaced by the monomeric state.  

Place, publisher, year, edition, pages
John Wiley & Sons, 2022. Vol. 60, no 3, p. 359-368
Keywords [en]
self-diffusion coefficient, premicellar aggregation, surfactants
National Category
Physical Chemistry
Research subject
Chemistry of Interfaces
Identifiers
URN: urn:nbn:se:ltu:diva-87373DOI: 10.1002/mrc.5222ISI: 000709544000001PubMedID: 34596264Scopus ID: 2-s2.0-85117405541OAI: oai:DiVA.org:ltu-87373DiVA, id: diva2:1600427
Funder
The Kempe FoundationsLuleå University of Technology
Note

Validerad;2022;Nivå 2;2022-03-01 (joosat);

Funder: Kazan Federal University (0671-2020-0051)

Available from: 2021-10-05 Created: 2021-10-05 Last updated: 2022-03-18Bibliographically approved

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Filippov, Andrei

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