Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165
The surface tension of aqueous solutions of Triton X-165 with rhamnolipid or surfactin mixtures was measured. The obtained results were applied for the determination of the concentration and composition of the Triton X-165 and biosurfactants mixture at the water–air interface as well as the contribu...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/11/3600 |
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| author | Edyta Rekiel Anna Zdziennicka Katarzyna Szymczyk Bronisław Jańczuk |
| author_facet | Edyta Rekiel Anna Zdziennicka Katarzyna Szymczyk Bronisław Jańczuk |
| author_sort | Edyta Rekiel |
| collection | DOAJ |
| description | The surface tension of aqueous solutions of Triton X-165 with rhamnolipid or surfactin mixtures was measured. The obtained results were applied for the determination of the concentration and composition of the Triton X-165 and biosurfactants mixture at the water–air interface as well as the contribution of the particular component of the mixtures to water surface tension reduction and the mutual influence of these components on the critical micelle concentration. The determination of these quantities was based on both the commonly used concepts and a new one proposed by us, which assumes that the composition of the mixed monolayer at the water–air interface depends directly on the pressure of the monolayer of the single mixture component and allows us to determine the surface concentration of each mixture component independently of surface tension isotherms shape. Taking into account the composition of the mixed monolayer at the water–air interface, the standard Gibbs adsorption free energy was considered. The obtained results allow us to state that the concentration of both mixture components corresponding to their saturated monolayer and the surface tension of their aqueous solution can be predicted using the surfactants’ single monolayer pressure and their mole fraction in the mixed monolayer determined in the proposed way. |
| first_indexed | 2024-03-10T01:03:14Z |
| format | Article |
| id | doaj.art-ff280a10e10e4128b80ba1c48db04681 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T01:03:14Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj.art-ff280a10e10e4128b80ba1c48db046812023-11-23T14:31:25ZengMDPI AGMolecules1420-30492022-06-012711360010.3390/molecules27113600Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165Edyta Rekiel0Anna Zdziennicka1Katarzyna Szymczyk2Bronisław Jańczuk3Department of Interfacial Phenomena, Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University in Lublin, 20-031 Lublin, PolandDepartment of Interfacial Phenomena, Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University in Lublin, 20-031 Lublin, PolandDepartment of Interfacial Phenomena, Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University in Lublin, 20-031 Lublin, PolandDepartment of Interfacial Phenomena, Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Skłodowska University in Lublin, 20-031 Lublin, PolandThe surface tension of aqueous solutions of Triton X-165 with rhamnolipid or surfactin mixtures was measured. The obtained results were applied for the determination of the concentration and composition of the Triton X-165 and biosurfactants mixture at the water–air interface as well as the contribution of the particular component of the mixtures to water surface tension reduction and the mutual influence of these components on the critical micelle concentration. The determination of these quantities was based on both the commonly used concepts and a new one proposed by us, which assumes that the composition of the mixed monolayer at the water–air interface depends directly on the pressure of the monolayer of the single mixture component and allows us to determine the surface concentration of each mixture component independently of surface tension isotherms shape. Taking into account the composition of the mixed monolayer at the water–air interface, the standard Gibbs adsorption free energy was considered. The obtained results allow us to state that the concentration of both mixture components corresponding to their saturated monolayer and the surface tension of their aqueous solution can be predicted using the surfactants’ single monolayer pressure and their mole fraction in the mixed monolayer determined in the proposed way.https://www.mdpi.com/1420-3049/27/11/3600biosurfactantsrhamnolipidsurfactinadsorptionmicellizationstandard Gibbs free energy |
| spellingShingle | Edyta Rekiel Anna Zdziennicka Katarzyna Szymczyk Bronisław Jańczuk Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165 Molecules biosurfactants rhamnolipid surfactin adsorption micellization standard Gibbs free energy |
| title | Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165 |
| title_full | Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165 |
| title_fullStr | Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165 |
| title_full_unstemmed | Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165 |
| title_short | Thermodynamic Analysis of the Adsorption and Micellization Activity of the Mixtures of Rhamnolipid and Surfactin with Triton X-165 |
| title_sort | thermodynamic analysis of the adsorption and micellization activity of the mixtures of rhamnolipid and surfactin with triton x 165 |
| topic | biosurfactants rhamnolipid surfactin adsorption micellization standard Gibbs free energy |
| url | https://www.mdpi.com/1420-3049/27/11/3600 |
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