The surface tension and surface potential of aqueous solutions of normal aliphatic alcohols

Posner, A. M.; Anderson, J.R.A.; Alexander, A. E.

doi:10.1016/0095-8522(52)90044-5

Cited by 98 publications

(42 citation statements)

References 16 publications

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“…This chain mobility also explains the moderate increase in A min with the length of the alkyl chain. Furtherlowing the proposal of Rosen et al of deducing DG 0 from more, it is interesting to note that going from the ''lipidpC 20 values, we obtain, using like'' to a ''solid-like'' state changes the value of A min by a factor close to two (16). …”

Section: Resultsmentioning

confidence: 93%

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: 93%

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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“…[32] is given by the Langmuir isotherm (Eq. [17]). These two equations are self-sufficient to compute the adsorption numerically, and thus the surface tension σ as a function of time.…”

Section: Diffusion-controlled Modelmentioning

confidence: 93%

Transient Surface Tension of an Expanding Liquid Sheet

Marmottant

Villermaux

Clanet

2000

Journal of Colloid and Interface Science

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“…(5) is known also as the Traube's constant [8,26]. Equation (5) can be used for determination of ΔG°f rom the slope of the π s (c) isotherm at low concentra tions, in the Henry region.…”

Section: Physicochemical Backgroundmentioning

confidence: 99%

“…For example, this could be SDS with added NaCl (Na + counterion), or DTAB (dodecyltrimethylam monium bromide) with added NaBr (Br − -counte rion). The Gibbs adsorption equation can be expressed in the form [18]: (26) where a i = c i γ ± (i = 1, 2, 3) are the activities of the re spective ions; c i are bulk concentrations; the subscript 1 stands for surfactant ions; 2 -for counterions; 3 - In addition, at not too low surfactant concentrations see e.g. [18].…”

Section: Empirical Approach For Ionic Surfactantsmentioning

confidence: 99%

The standard free energy of surfactant adsorption at air/water and oil/water interfaces: Theoretical vs. empirical approaches

Danov

Kralchevsky

2012

Colloid J

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The standard free energy of surfactant adsorption represents the work of transfer of a surfactant molecule from the bulk of solution to an infinitely diluted adsorption layer. This quantity can be determined by non linear fits of surface tension isotherms with the help of a theoretical model of adsorption. Here, the models of Frumkin, van der Waals and Helfand-Frisch-Lebowitz are applied, and the results are compared. Irrespective of the differences between these models, they give close values for the standard free energy. The results from the theoretical approach are compared with those from the most popular empirical approach. The latter gives values of the standard free energy, which are considerably different from the respective true values, with c.a. 10 kJ/mol for nonionic surfactants, and with c.a. 20 kJ/mol for ionic surfactants. These dif ferences are due to contributions from interactions between the molecules in dense adsorption layers. It is concluded that the true values of the standard free energy can be determined with the help of an appropriate theoretical model. For the processed sets of data, the van der Waals model gives the best results, especially for the determination of the standard adsorption enthalpy and entropy from the temperature dependence of sur face tension. The results can be useful for the development of a unified approach to the thermodynamic char acterization of surfactants.

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The surface tension and surface potential of aqueous solutions of normal aliphatic alcohols

Cited by 98 publications

References 16 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

Transient Surface Tension of an Expanding Liquid Sheet

The standard free energy of surfactant adsorption at air/water and oil/water interfaces: Theoretical vs. empirical approaches

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