Adsorption of detergents at the liquid-liquid interface. Part 1

Vader, F. van Voorst

doi:10.1039/tf9605601067

Cited by 119 publications

(40 citation statements)

References 4 publications

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“…These data show, over a wide concentration range, an almost linear relationship between the solution surface tension (g) and the logarithm of the solute concentration. According to Gibbs' equation, this implies that the surface can be considered to be covered with an almost constant (nearly incompressible) monolayer of the solute (9,13). From the slope of these plots the surface excess (G ϱ ) under conditions of total surface coverage and, from this, the area (A min ) covered by each solute molecule are obtained.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Free Energy of Alkanols in Aqueous Solutions: Dependence with Hydrophobicity and Topology of the Solute

Aspée

Lissi

1996

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Interfacial Free Energy of Alkanols in Aqueous Solutions: Dependence with Hydrophobicity and Topology of the Solute

Aspée

Lissi

1996

Journal of Colloid and Interface Science

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“…In contrast to the above, a number of reports in the literature question the formation of such association complexes (28)(29)(30)(31)(32)(33). Potentiometric measurements of van Voorst Vader (29), for example, showed no significant evidence for association in dodecylsulfate solutions.…”

Section: Introductionmentioning

confidence: 89%

Dimerization of oleate in aqueous solutions

Somasundaran

Ananthapadmanabhan

Ivanov

1984

Journal of Colloid and Interface Science

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“…nm'/molecule (8,23). This value is in good agreement with the Figure 4A shows two spectra in the CH stretching region reported value of 0.57 nm'/molecule (24) for the SDS molerecorded for different films.…”

Section: The Ch Stretching Bands Of Sds In First Black Filmsmentioning

confidence: 99%

Fourier transform infrared study on black soap films

Umemura¹,

Matsumoto²,

Kawai³

et al. 1985

Can. J. Chem.

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This paper is dedicated to Professor Camille Sandorfy on the occa.siorz of his 65th birthdayJ u~z o UMEMURA, MUTSUO MATSUMOTO, TAKESHI KAWAI, and TOHRU TAKENAKA. Can. J. Chem. 63, 1713Chem. 63, (1985. Fourier transform infrared (FT-IR) spectra in the range 3800-2800 cm-' have been recorded of the first and second black films in air prepared from aqueous solutions of sodium dodecylsulfate (SDS) without and with the addition of sodium chloride, respectively. It is found that in both films the methylene chains of SDS, which are located outside the aqueous core of the sandwich structure, are in an oriented liquid crystalline state. In a first black film, the thickness of the aqueous core is determined to be 9.6 nm, by recording polarized infrared spectra with various angles of incidence to the film surface, and by analyzing them with the aid of thin layer optics. It is found that this value varies in the range 5 -10 nm from film to film.The extinction coefficients of the aqueous core are also examined. In the second black film, the thickness of the aqueous core is found to be about I nm. The OH stretching band of water in the second black film appears at appreciably higher wavenumbers (by 60 cm-') than those of the first black film, indicating a high ionic strength in the aqueous core. In both black films, there is no sign of molecular orientation or rigidified structure of water.J u~z o UMEMURA, MUTSUO MATSUMOTO, TAKESHI KAWAI et TOHRU TAKENAKA. Can. J. Chem. 63, 1713 (1985). On a enregistrt les spectres infrarouges par transformation de Fourier dans la region de 3800 h 2800 cm-I des premier et deuxikme films noirs dans I'air prCparCs a partir de solutions aqueuses de dodtcylsulfate de sodium (DSS) respectivement avec et sans chlorure de sodium. On a trouvC que dans chacun de ces films, les chaines mtthylknes du DSS, qui sont situtes ti I'exttrieur du noyeau aqueux de la structure en sandwiche, sont dans un Ctat cristallin liquide orientC. En enregistrant les spectres infrarouges polarisCs sous divers angles d'incidence par rapport a la surface du film et en les analysant i i l'aide de principes d'optique pour les couches minces, on a CvaluC que I'Cpaisseur du noyeau aqueux du premier film noir est tgale ti 9,6 nm. On a trouvt que cette valeur varie de 5 a I0 nm suivant le film. On a aussi examink les coefficients d'extinction des noyeaux aqueux. Dans le deuxikme film noir, on a trouvC que I'tpaisseur du noyeau aqueux est tgale a I nm. Par rapport au premier film noir, la bande de vibration OH de I'eau du deuxikme film noir se trouve a des nombres d'onde beaucoup plus ClevCs (environ 60 cm-I); ce rtsultat indiquerait la prksence d'une force ionique Clevte dans le noyeau aqueux. Dans les deux films noirs, il n'existe aucun signe d'orientation molCculaire ou de structure rigidifite de I'eau.[Traduit par le journal]

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Adsorption of detergents at the liquid-liquid interface. Part 1

Cited by 119 publications

References 4 publications

Interfacial Free Energy of Alkanols in Aqueous Solutions: Dependence with Hydrophobicity and Topology of the Solute

Interfacial Free Energy of Alkanols in Aqueous Solutions: Dependence with Hydrophobicity and Topology of the Solute

Dimerization of oleate in aqueous solutions

Fourier transform infrared study on black soap films

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