2004
DOI: 10.1590/s0103-50532004000400008
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Construction of surfactant-membrane electrodes selective for sodium dodecyl sulfate in poly(ethylene oxide)-surfactant mixtures

Abstract: Neste trabalho foram construídos eletrodos seletivos para o surfactante dodecilsulfato de sódio (SDS) e para brometo, respectivamente, eletrodo indicador e de referência, para medidas potenciométricas. Os eletrodos foram utilizados em solução de SDS e em mistura de SDS e poli(oxietileno) (PEO). Os perfis de potencial da célula (E) versus a concentração de SDS, na ausência e em presença de 0,5% de PEO, são sensíveis ao processo de associação cooperativa entre SDS e PEO e indicativos de parâmetros como concentra… Show more

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Cited by 8 publications
(4 citation statements)
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“…An example of a system containing a neutral polymer and an anionic surfactant is the system poly(ethylene oxide) mixed with sodium dodecylsulfate (PEO/SDS). A significant amount of work has been reported in the literature on the interaction between PEO and SDS, including NMR investigations [16][17][18][19][20][21], calorimetry [22][23][24][25][26][27], and other techniques [28][29][30][31][32][33]. Given the extensive investigations on these systems, it is surprising that the manner in which the surfactant and polymer interact to form aggregates is still controversial.…”
Section: Introductionmentioning
confidence: 99%
“…An example of a system containing a neutral polymer and an anionic surfactant is the system poly(ethylene oxide) mixed with sodium dodecylsulfate (PEO/SDS). A significant amount of work has been reported in the literature on the interaction between PEO and SDS, including NMR investigations [16][17][18][19][20][21], calorimetry [22][23][24][25][26][27], and other techniques [28][29][30][31][32][33]. Given the extensive investigations on these systems, it is surprising that the manner in which the surfactant and polymer interact to form aggregates is still controversial.…”
Section: Introductionmentioning
confidence: 99%
“…The association of polymer-micelle can be detected by [43,44] Recycling Polymeric Materials for Corrosion Control DOI: http://dx.doi.org /10.5772/intechopen.83469 In the present part, we report recent studies upon the association between surfactant and recycled VP/VA copolymer and its effect on the adsorption properties of the surfactant molecules on metal surfaces. The study review consists of two major parts: the association between anionic (AS) and cationic (CS) surfactant and recycled VP/VA copolymer and the effect of the association on the adsorption properties of the surfactant molecules on the corrosion of carbon steel in acidic solution.…”
Section: Recycling Copolymer Vinyl Pyrrolidone/vinyl Acetate As Corromentioning
confidence: 97%
“…Para cada medição, foi utilizado volume de 10 mL da solução do surfactante correspondente em um frasco termostatizado a 25 °C; Potenciométrica -o sistema dispõe de um potenciômetro da marca Orion 720A, um eletrodo de membrana seletiva para surfactante (indicador) e eletrodo para brometo. 9 As medições de potencial foram obtidas a 25 °C, após adição de volume previamente calculado de surfactante. A cmc é determinada através da construção da curva de potencial em função do logaritmo da concentração molar de surfactante.…”
Section: 9unclassified
“…Além disso, a exemplo de outros trabalhos citados na literatura, 8,9 a utilização da potenciometria reforça novas tendências de pesquisa que permitem aos estudantes aprofundar conhecimentos a respeito do comportamento de eletrodos modificados, executando experimentos simples, com materiais acessíveis e de baixo custo.…”
Section: Introductionunclassified