Mixed Cationic Surfactant Vesicles in (Dioctadecyldimethylammonium Bromide)/NaCl and (Dioctadecyldimethylammonium Chloride)/NaBr Aqueous Dispersions

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dc.contributor.authorFeitosa, Eloi [UNESP]
dc.contributor.authorLemos, Monique [UNESP]
dc.contributor.authorAdati, Renata D.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFed Univ Technol Parana UTFPR
dc.date.accessioned2019-10-04T12:40:27Z
dc.date.available2019-10-04T12:40:27Z
dc.date.issued2019-07-26
dc.description.abstractOne of the most challenging characteristics not fully understood yet of the cationic surfactant salt dioctadecyldimethylammonium (DODA(+)) halide is concerned with the effects of the counterion (usually Br- and Cl-) on the surfactant assembly into vesicle structures in aqueous solution. These counterions play a key role in the self-organization of DODA(+) into bilayer structures. Differential scanning calorimetry (DSC) and dynamic light scattering (DLS) techniques were used here to investigate systematically the effects of the single salts NaCl and NaBr, respectively, on the thermal behavior and structural organization of the cationic dioctadecyldimethylammonium bromide and chloride (DODAB and DODAC) in water. The results undoubtedly indicate that the added Br- or Cl-, respectively, into DODAC and DODAB aqueous dispersions, replaces partially the bound counterions (Cl- and Br-) from the vesicles, yielding formation of DODAB/DODAC mixed vesicles. As a conclusion, single salts may be used to tune the thermal and structural characteristics of cationic vesicles.en
dc.description.affiliationSao Paulo State Univ, Dept Phys, Rua Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
dc.description.affiliationFed Univ Technol Parana UTFPR, Dept Chem & Biol, Curitiba, Parana, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Dept Phys, Rua Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2008/54418-8
dc.description.sponsorshipIdFAPESP: 2011/07414-0
dc.description.sponsorshipIdCNPq: 304543/2006-3
dc.format.extent9
dc.identifierhttp://dx.doi.org/10.1002/jsde.12329
dc.identifier.citationJournal Of Surfactants And Detergents. Hoboken: Wiley, 9 p., 2019.
dc.identifier.doi10.1002/jsde.12329
dc.identifier.issn1097-3958
dc.identifier.urihttp://hdl.handle.net/11449/186005
dc.identifier.wosWOS:000479732600001
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal Of Surfactants And Detergents
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDODAB
dc.subjectDODAC
dc.subjectCationic surfactant vesicles
dc.subjectCounterion
dc.subjectThermal behavior
dc.titleMixed Cationic Surfactant Vesicles in (Dioctadecyldimethylammonium Bromide)/NaCl and (Dioctadecyldimethylammonium Chloride)/NaBr Aqueous Dispersionsen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell

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