Dynamic interfacial tension of surfactant solutions

Miller, R.; Aksenenko, E. V.; Fainerman, V. B.

doi:10.1016/j.cis.2016.12.007

Cited by 103 publications

(65 citation statements)

References 112 publications

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“…The conventional technique of determining the surfactants adsorption has been studied by computer simulation, mathematical and kinetic analysis as such [10][11][12]. None of these techniques, however, provide sufficient understanding in visualizing the adsorption of surfactants on carbon nanotubes at the molecular level.…”

Section: Introductionmentioning

confidence: 99%

Identification of surfactants aggregates on graphitic surface of carbon nanotubes

Fadil

Affandi

Misnon

2019

Journal of Experimental Nanoscience

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There are a relatively large number of studies on surfactants facilitates the dispersion of multi-walled carbon nanotubes (MWCNTs), however reports for both orientation and size aggregation of surfactants on MWCNTs are scarcely described. In this study, we demonstrate the visualization of the surfactants aggregates onto MWCNTs using atomic force microscopic (AFM) and field emission electron scanning microscopy (FESEM) to provide information on the orientation and the grains size of surfactants-MWCNTs aggregates. MWCNTs treated with surfactants of different charges, namely sodium dodecyl sulphate (SDS), the anionic, cetyltrimethyl ammonium bromide (CTAB), the cationic and polysorbate 80 (Tween-80), the non-ionic, displayed substantial pattern of surfactant-MWCNTs surface contours. Raman spectroscopy analysis has been presented in order to report the characteristic of defective MWCNTs graphitize structure upon non-covalent adsorption of respective surfactants.

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Section: Introductionmentioning

confidence: 99%

Identification of surfactants aggregates on graphitic surface of carbon nanotubes

Fadil

Affandi

Misnon

2019

Journal of Experimental Nanoscience

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“…At the interface between the solution and air saturated by hexane, however, the surface tensions dropped down by 18–22 mN m −1 to become 40.7 and 30.6 mN m −1 , respectively, for these two solutions. In addition, in [109] the temperature dependence of the adsorption and desorption dynamics of heptane vapor at the drop surface of C 10 EO 8 solution was studied.…”

Section: Resultsmentioning

confidence: 99%

Surface Tension and Adsorption Studies by Drop Profile Analysis Tensiometry

Kairaliyeva

Aksenenko

Mucic

et al. 2017

J Surfact & Detergents

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Surface tension and dilational viscoelasticity of solutions of various surfactants measured with bubble and drop profile analysis tensiometry are discussed. The study also includes experiments on the co-adsorption of surfactant molecules from a solution drop and alkane molecules from saturated alkane vapor phase. Using experimental data for 12 surfactants with different surface activities, it is shown that depletion due to adsorption of surfactant from the drop bulk can be significant. An algorithm is proposed quantitatively to take into consideration the depletion effect which is required for a correct description of the co-adsorption of alkanes on the solution drop surface and the correct analysis of experimental dynamic surface tension data to determine the adsorption mechanism. Bubble and drop profile analysis tensiometry is also the method of choice for measuring the dilational viscoelasticity of the adsorbed interfacial layer. The same elasticity moduli are obtained with the bubble and drop method only when the equilibrium surface pressures are sufficiently small (Π < 15 mN m−1). When the surface pressure for a surfactant solution is larger than this value, the viscoelasticity moduli determined from drop profile experiments become significantly larger than those obtained from bubble profile measurements.

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“…While dynamic surface tension data and sorption model parameters for aqueous systems are available for a large number of surfactants [25,43], only limited data for other solvents are available. Future works should therefore investigate sorption dynamics of non-aqueous systems, such as, e.g., energy curable inks used in a wide range of inkjet applications [32].…”

Section: Discussionmentioning

confidence: 99%

Spreading of Micrometer-Sized Droplets under the Influence of Insoluble and Soluble Surfactants: A Numerical Study

Antritter

Hachmann

Gambaryan‐Roisman

et al. 2019

Colloids and Interfaces

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Wetting and spreading of surfactant solutions play an important role in many technical applications. In printing processes, the size of individual droplets is typically on the order of a few tens of microns. The purpose of this study is to develop a better understanding of the interaction between spreading and surfactant transport on these small length and related time scales. Therefore, numerical simulations based on the volume-of-fluid method including Marangoni stresses and transport of an insoluble or soluble surfactant are performed. The results for an insoluble surfactant show competing effects of Marangoni flow on the one hand, and a decreasing surfactant concentration as the droplet spreads on the other hand. Even in the case of a soluble surfactant, adsorption and desorption could only partly mitigate these effects, demonstrating the importance of the sorption kinetics for fast, small scale wetting processes.

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Dynamic interfacial tension of surfactant solutions

Cited by 103 publications

References 112 publications

Identification of surfactants aggregates on graphitic surface of carbon nanotubes

Identification of surfactants aggregates on graphitic surface of carbon nanotubes

Surface Tension and Adsorption Studies by Drop Profile Analysis Tensiometry

Spreading of Micrometer-Sized Droplets under the Influence of Insoluble and Soluble Surfactants: A Numerical Study

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