Studies on anionic dye Eosin Y in mixed anionic micellar medium
Dye-Surfactant interactions in aqueous solution are important in industrial processes. Generally, dyes associate strongly with oppositely charged surfactants. But, similarly charged dye-surfactants are not preferred anticipating repulsion. To gain insight into the nature and extent of interaction be...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715623004599 |
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| author | M. Sobika Sutharsan Karunanithi Sasmita Dash |
| author_facet | M. Sobika Sutharsan Karunanithi Sasmita Dash |
| author_sort | M. Sobika |
| collection | DOAJ |
| description | Dye-Surfactant interactions in aqueous solution are important in industrial processes. Generally, dyes associate strongly with oppositely charged surfactants. But, similarly charged dye-surfactants are not preferred anticipating repulsion. To gain insight into the nature and extent of interaction between anionic dye Eosin Yellow (EY) and mixed anionic micellar system, this study was undertaken. Mixed micellar system comprised of anionic, Sodium dodecyl sulfate (SDS) and nonionic Pluronic L-35 (L-35). The characterizations employed were FTIR Spectroscopy, Conductivity, UV visible spectroscopy, Fluorescence spectroscopy and SEM studies. A red shift with enhancement of intensity was observed both in UV-absorption and emission spectra of EY when interacted with SDS + L-35 mixed micellar system. From the conductance measurements, the counter ion binding constant β was calculated. Subsequently, various thermodynamic parameters viz., ΔGm, ΔHm and ΔSm were evaluated using β. The Gibbs free energy of micellization, ΔGm was observed to be −4.56 kJ mol−1, −13.34 kJ mol−1 and −18.55 kJ mol−1 for SDS, SDS + L-35 and SDS + L-35 + EY respectively. The negative values of ΔGm are indicating the spontaneous binding occurring between EY and SDS + L-35. The SEM images revealed enlargement of grain size of the mixed micelle after encapsulation of EY. To the best of our knowledge this is the first report of anionic dye EY with an anionic mixed micellar system. |
| first_indexed | 2024-03-08T23:12:19Z |
| format | Article |
| id | doaj.art-395831a42e0b4517aac550b2b7ed7d5a |
| institution | Directory Open Access Journal |
| issn | 2211-7156 |
| language | English |
| last_indexed | 2024-03-08T23:12:19Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj.art-395831a42e0b4517aac550b2b7ed7d5a2023-12-15T07:23:56ZengElsevierResults in Chemistry2211-71562024-01-017101220Studies on anionic dye Eosin Y in mixed anionic micellar mediumM. Sobika0Sutharsan Karunanithi1Sasmita Dash2Department of Chemistry, Annamalai University, Chidambaram 608002, Tamil Nadu, IndiaDepartment of Chemistry, Annamalai University, Chidambaram 608002, Tamil Nadu, IndiaCorresponding author.; Department of Chemistry, Annamalai University, Chidambaram 608002, Tamil Nadu, IndiaDye-Surfactant interactions in aqueous solution are important in industrial processes. Generally, dyes associate strongly with oppositely charged surfactants. But, similarly charged dye-surfactants are not preferred anticipating repulsion. To gain insight into the nature and extent of interaction between anionic dye Eosin Yellow (EY) and mixed anionic micellar system, this study was undertaken. Mixed micellar system comprised of anionic, Sodium dodecyl sulfate (SDS) and nonionic Pluronic L-35 (L-35). The characterizations employed were FTIR Spectroscopy, Conductivity, UV visible spectroscopy, Fluorescence spectroscopy and SEM studies. A red shift with enhancement of intensity was observed both in UV-absorption and emission spectra of EY when interacted with SDS + L-35 mixed micellar system. From the conductance measurements, the counter ion binding constant β was calculated. Subsequently, various thermodynamic parameters viz., ΔGm, ΔHm and ΔSm were evaluated using β. The Gibbs free energy of micellization, ΔGm was observed to be −4.56 kJ mol−1, −13.34 kJ mol−1 and −18.55 kJ mol−1 for SDS, SDS + L-35 and SDS + L-35 + EY respectively. The negative values of ΔGm are indicating the spontaneous binding occurring between EY and SDS + L-35. The SEM images revealed enlargement of grain size of the mixed micelle after encapsulation of EY. To the best of our knowledge this is the first report of anionic dye EY with an anionic mixed micellar system.http://www.sciencedirect.com/science/article/pii/S2211715623004599Eosin yellowFluorescence spectroscopyConductivity measurementPluronic L-35UV visible spectroscopyFTIR Spectroscopy |
| spellingShingle | M. Sobika Sutharsan Karunanithi Sasmita Dash Studies on anionic dye Eosin Y in mixed anionic micellar medium Results in Chemistry Eosin yellow Fluorescence spectroscopy Conductivity measurement Pluronic L-35 UV visible spectroscopy FTIR Spectroscopy |
| title | Studies on anionic dye Eosin Y in mixed anionic micellar medium |
| title_full | Studies on anionic dye Eosin Y in mixed anionic micellar medium |
| title_fullStr | Studies on anionic dye Eosin Y in mixed anionic micellar medium |
| title_full_unstemmed | Studies on anionic dye Eosin Y in mixed anionic micellar medium |
| title_short | Studies on anionic dye Eosin Y in mixed anionic micellar medium |
| title_sort | studies on anionic dye eosin y in mixed anionic micellar medium |
| topic | Eosin yellow Fluorescence spectroscopy Conductivity measurement Pluronic L-35 UV visible spectroscopy FTIR Spectroscopy |
| url | http://www.sciencedirect.com/science/article/pii/S2211715623004599 |
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