Dynamic measurements of dilational properties of a liquid interface

Lucassen, J.; Tempel, M. van den

doi:10.1016/0009-2509(72)80104-0

Cited by 743 publications

(454 citation statements)

References 9 publications

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“…The analysis of the data obtained for solutions of relatively low bulk viscosity in the full range of frequencies has shown that diffusion model [39] cannot be used for these solutions in order to find the limiting elasticity. That is why, to compare the surface viscoelastic properties of different solutions we performed the measurements on the one fixed frequency of 0.1 Hz.…”

Section: Surface Rheologymentioning

confidence: 99%

Bulk and surface rheology of Aculyn™ 22 and Aculyn™ 33 polymeric solutions and kinetics of foam drainage

Bureiko

Trybała

Huang

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Citation: BUREIKO, A., 2013 AbstractExperimental investigations of both bulk and surface rheology of solutions of commercially available polymers Aculyn TM 22 and Aculyn TM 33 in presence of sodium chloride are performed in a wide range of the polymer and salt concentrations. It is shown that the bulk viscosity and the surface viscoelastic modulus of solutions of both polymers increases with the increase of polymer concentration and the decrease of the salt concentration. Solutions of both polymers demonstrate very good foamability and form stable foams. Foam drainage is governed mainly by the bulk viscosity when the latter is in the range of 100-500 mPa·s.

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Section: Surface Rheologymentioning

confidence: 99%

Bulk and surface rheology of Aculyn™ 22 and Aculyn™ 33 polymeric solutions and kinetics of foam drainage

Bureiko

Trybała

Huang

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…respectively, 25,26 where 0 is a material parameter related to a characteristic diffusion relaxation time of the system under consideration.…”

Section: B Models For the Apparent Dilatational Elasticity And Viscomentioning

confidence: 99%

Transient interfacial tension and dilatational rheology of diffuse polymer-polymer interfaces

Peters

Zdravkov

Meijer

2005

The Journal of Chemical Physics

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We demonstrate the influence of molecular weight and molecular weight asymmetry across an interface on the transient behavior of the interfacial tension. The interfacial tension was measured as a function of time for a range of polymer combinations with a broad range of interfacial properties using a pendant/sessile drop apparatus. The results show that neglecting mutual solubility, assumed to be a reasonable approximation in many cases, very often does not sustain. Instead, a diffuse interface layer develops in time with a corresponding transient interfacial tension. Depending on the specific combination of polymers, the transient interfacial tension is found to increase or decrease with time. The results are interpreted in terms of a recently proposed model ͓Shi et al., Macromolecules 37, 1591 ͑2004͔͒, giving relative characteristic diffusion time scales in terms of molecular weight, molecular weight distribution, and viscosities. However, the time scales obtained from this theoretical approach do not give a conclusive trend. Using oscillatory dilatational interfacial experiments the viscoelastic behavior of these diffusive interfaces is demonstrated. The time evolution of the interfacial tension and the dilatational elasticity show the same trend as predicted by the theory of diffuse interfaces, supporting the idea that the polymer combinations under consideration indeed form diffuse interfaces. The dilatational elasticity and the dilatational viscosity show a frequency dependency that is described qualitatively by a simple Fickian diffusion model and quantitatively by a Maxwell model. The characteristic diffusion times provided by the latter show that the systems with thick interfaces ͑tens of microseconds and more͒ can be considered as slower diffusive systems compared to the systems with thinner interfaces ͑a few micrometers in thickness and less͒ can be considered as fast diffusive systems.

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“…It means that the isotherm equation γ = γ (Γ (c s (t))) of the surface tension is permanently valid. The LvdT modulus reads [15][16][17] …”

Section: ( A) γ ( A) and C S ( A)mentioning

confidence: 99%

A study of kinetic molecular exchange processes in the medium frequency range by surface SHG on an oscillating bubble

Örtegren

Wantke

Motschmann

et al. 2004

Journal of Colloid and Interface Science

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The dilatational properties of fluid surfaces and interfaces have been comprehensively investigated in recent years. For example, an improved oscillating bubble device provided experimental results that allow for critical testing of established surface models, such as the Lucassen/van den Tempel (LvdT) model. The comparison of the LvdT model with the oscillating bubble experiments demonstrates a mismatch between the model parameters. For example, near the CMC or the limit of solubility the calculated parameters of surfactant solutions become unrealistically large. The deviation can be explained by the introduction of more detailed surface models, in particular by the modification of the effective thickness of the surface layer, its internal structure and the molecular exchange processes between these structures. For the verification of such processes an experimental setup was realized which allows for an independent determination of the instantaneous adsorption state at the surface of an oscillating bubble inside a surfactant solution. The setup utilizes the Second Harmonic Generation (SHG)-effect at the air-solution interface generated by the light of a pulsed LASER. The set-up is described in detail, and the results of a first experimental series are presented and discussed in this paper. As system, aqueous solutions of the fluortenside F381 were used.  2004 Elsevier Inc. All rights reserved.

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Dynamic measurements of dilational properties of a liquid interface

Cited by 743 publications

References 9 publications

Bulk and surface rheology of Aculyn™ 22 and Aculyn™ 33 polymeric solutions and kinetics of foam drainage

Bulk and surface rheology of Aculyn™ 22 and Aculyn™ 33 polymeric solutions and kinetics of foam drainage

Transient interfacial tension and dilatational rheology of diffuse polymer-polymer interfaces

A study of kinetic molecular exchange processes in the medium frequency range by surface SHG on an oscillating bubble

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