Interactions in mixed micellar systems comprising chiral cationic amino acid based and conventional anionic surfactants

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dc.authorid0000-0002-0386-589X
dc.contributor.authorOlutaş, Elif Berna
dc.date.accessioned2021-06-23T19:52:15Z
dc.date.available2021-06-23T19:52:15Z
dc.date.issued2019
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Kimya Bölümüen_US
dc.description.abstractThe formation of mixed micelle in water between a chiral cationic amino acid based surfactant, L-alaninehydrochloride dodecylester (L-ADDE), and conventional anionic surfactants (AS), sodium decyl sulfate (SDS), sodium dodecyl sulfate (SDDS) and sodium dodecylbenzene sulfonate (SDBS), has been investigated by conductivity, density and dynamic light scattering (DLS) measurements at 25 degrees C. The critical micelle concentrations (CMC), degree of counterion dissociation (alpha) and standard Gibbs energy of micellization (Delta G(mic)) have been determined for both pure and mixed systems, and the results have been compared with each other. Physico-chemical parameters included the critical micelle concentration of ideal mixtures (CMCideal), the mole fraction of L-ADDE in ideal (X-L-ADD(ideal)) and real mixed micelles (XL-ADDE), and interaction parameter (beta) have been calculated by theoretical models to reveal the properties of mixed micelles. L-ADDE/SDS mixed system exhibited behavior changing from synergistic to antagonistic interactions with increasing L-ADDE concentration, whereas a reverse case was observed in L-ADDE/SDBS mixed system, i.e., from antagonistic to synergistic interactions. L-ADDE/SDDS mixed system showed antagonistic interactions over all the mole fraction range studied. The change of the apparent molal volume upon micellization (Delta V-phi(mic)) values determined from density measurements revealed that mixed micelles packed more tightly than their corresponding pure micelles. In addition, the sizes of the aggregates in binary mixed systems were found to be larger than those of the pure ones indicating the transformation from the small micelles to large aggregated structures. The increment in size of aggregates may be suggested with the vesicular structures. (C) 2018 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.molliq.2018.10.138
dc.identifier.endpage135en_US
dc.identifier.issn0167-7322
dc.identifier.issn1873-3166
dc.identifier.scopus2-s2.0-85056857950en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage126en_US
dc.identifier.urihttps://doi.org/10.1016/j.molliq.2018.10.138
dc.identifier.urihttps://hdl.handle.net/20.500.12491/10122
dc.identifier.volume275en_US
dc.identifier.wosWOS:000458228400014en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorOlutaş, Elif Berna
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal Of Molecular Liquidsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAmino-add Based Surfactanten_US
dc.subjectConventional Surfactanten_US
dc.subjectCritical micelle Concentrationen_US
dc.subjectMixed Micellesen_US
dc.subjectMicellar Interactionsen_US
dc.titleInteractions in mixed micellar systems comprising chiral cationic amino acid based and conventional anionic surfactantsen_US
dc.typeArticleen_US

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