Calorimetric And Light Scattering Investigations Of The Transition From Spherical To Wormlike Micelles Of C(14)tab Triggered By Salicylate

dc.creatorIto
dc.creatorThiago Heiji; Rodrigues
dc.creatorRoberta Kamei; Loh
dc.creatorWatson; Sabadini
dc.creatorEdvaldo
dc.date2015-Jun
dc.date2016-06-07T13:36:44Z
dc.date2016-06-07T13:36:44Z
dc.date.accessioned2018-03-29T01:52:01Z
dc.date.available2018-03-29T01:52:01Z
dc.identifier
dc.identifierCalorimetric And Light Scattering Investigations Of The Transition From Spherical To Wormlike Micelles Of C(14)tab Triggered By Salicylate. Amer Chemical Soc, v. 31, p. 6020-6026 Jun-2015.
dc.identifier0743-7463
dc.identifierWOS:000356202300006
dc.identifier10.1021/acs.langmuir.5b01027
dc.identifierhttp://pubs.acs.org/doi/abs/10.1021/acs.langmuir.5b01027
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/244358
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1308056
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionAlthough wormlike micelles (WLM) were first described more than 30 years ago, many aspects of their formation process are still unclear. Herein, a systematic experimental investigation of the process for wormlike micelle (WLM) formation in mixtures of tetradecyltrimethylammonium bromide (C(14)TAB) and salicylate (2-hydroxybenzoate) was carried out. This system was used as a model to investigate the conditions for the formation of the giant aggregate. For comparison, the other two isomers of salicylate (3- and 4-hydroxybenzoate) were also investigated, once in these cases wormlike micelles are not formed. The studies were based on calorimetric titration, static light scattering, and rheological measurements. Enthalpy changes upon titration of C(14)TAB into 2-hydroxybenzoate solutions revealed a highly Cooperative and exothermic process that was associated with micelle growth. The size of the aggregates, obtained by static light scattering measurements, confirms the shape transition. In addition, the correlation of these two sets of results with measurements of micelle charge surface indicates that this transition occurs around the point of charge neutralization.
dc.description31
dc.description22
dc.description
dc.description6020
dc.description6026
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionPETROBRAS
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description
dc.description
dc.description
dc.languageen
dc.publisherAMER CHEMICAL SOC
dc.publisher
dc.publisherWASHINGTON
dc.relationLANGMUIR
dc.rightsfechado
dc.sourceWOS
dc.subjectViscoelastic Surfactant Solutions
dc.subjectDrag Reduction
dc.subjectAlkylpyridinium Surfactants
dc.subjectPhotorheological Fluids
dc.subjectOrientational Binding
dc.subjectCationic Micelles
dc.subjectGiant Micelles
dc.subjectCounterions
dc.subjectHydration
dc.subjectRheology
dc.titleCalorimetric And Light Scattering Investigations Of The Transition From Spherical To Wormlike Micelles Of C(14)tab Triggered By Salicylate
dc.typeArtículos de revistas


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