The role of electrolyte and polyelectrolyte on the adsorption of the anionic surfactant, sodium dodecylbenzenesulfonate, at the air–water interface

Zhang, X.L.; Taylor, D. J.; Thomas, Robert K.; Penfold, J.

doi:10.1016/j.jcis.2011.01.024

Cited by 24 publications

(11 citation statements)

References 24 publications

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“…1 and 2) are slightly higher (52 and 50 Å 2 , respectively). These molecular surface areas are close to that (&53 Å 2 ) reported by Zhang et al [41] for SDBS adsorption at the water-air interface. Nonetheless, unlike the case of Zhang et al [41] in which the adsorption of SDBS took place from water, the adsorption of SDBS under our experimental condition takes place from a solution containing a high concentration ([38.5 mM) of the counter-ion (Na ?…”

Section: Resultssupporting

confidence: 90%

Benchmarking the Self‐Assembly of Surfactin Biosurfactant at the Liquid–Air Interface to those of Synthetic Surfactants

Onaizi

Nasser

Al-Lagtah

2016

J Surfact & Detergents

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The adsorption of surfactin, a lipopeptide biosurfactant, at the liquid–air interface has been investigated in this work. The maximum adsorption density and the nature and the extent of lateral interaction between the adsorbed surfactin molecules at the interface were estimated from surface tension data using the Frumkin model. The quantitative information obtained using the Frumkin model was also compared to those obtained using the Gibbs equation and the Langmuir–Szyszkowski model. Error analysis showed a better agreement between the experimental and the calculated values using the Frumkin model relative to the other two models. The adsorption of surfactin at the liquid–air interface was also compared to those of synthetic anionic, sodium dodecylbenzenesulphonate (SDBS), and nonionic, octaethylene glycol monotetradecyl ether (C14E8), surfactants. It has been estimated that the area occupied by a surfactin molecule at the interface is about 3- and 2.5-fold higher than those occupied by SDBS and C14E8 molecules, respectively. The interaction between the adsorbed molecules of the anionic biosurfactant (surfactin) was estimated to be attractive, unlike the mild repulsive interaction between the adsorbed SDBS molecules.

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Section: Resultssupporting

confidence: 90%

Benchmarking the Self‐Assembly of Surfactin Biosurfactant at the Liquid–Air Interface to those of Synthetic Surfactants

Onaizi

Nasser

Al-Lagtah

2016

J Surfact & Detergents

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“…A number of studies have been published on the interactions between polymers and surfactants (Harada and Kataoka, 2006;Dan et al, 2009;Bai et al, 2010;Stoll et al, 2010;Villetti et al, 2011;Zhang et al, 2011). The majority of these studies are focused on the methodology and the feasibility to accomplish polymer-surfactant aggregation at very low surfactant concentrations (Goddard and Ananthapadmanabhan, 1993;Kwak, 1998;Touhami et al, 2001;Trabelsi and Langevin, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effect of cationic surfactant addition on the drag reduction behaviour of anionic polymer solutions

2011

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Although extensive research work has been carried out on the drag reduction (DR) behaviour of polymers and surfactants alone, little progress has been made on the synergistic effects of combined polymers and surfactants. In this work, the interactions between drag-reducing anionic polymer (copolymer of acrylamide and sodium acrylate, referred to as PAM) and drag-reducing cationic surfactant (octadecyltrimethylammonium chloride, OTAC) are studied. Solutions are prepared using both deionised (DI) water and tap water. The measurement of the physical properties such as electrical conductivity and viscosity are used to determine the surfactant-polymer interactions. The addition of surfactant to the polymer solution has a significant effect on the properties of the system. The critical micelle concentration (CMC) of the mixed surfactant-polymer system is found to be different from that of the surfactant alone. With the addition of surfactant to a polymer solution, a substantial decrease in the viscosity occurs. The observed changes in the viscosity of mixed polymer-surfactant system are explained in terms of the changes in the extension of polymeric chains, resulting from polymer-surfactant interactions. The anionic PAM chains tend to collapse upon the addition of cationic OTAC. The pipeline flow behaviour of PAM/OTAC mixtures is found to be consistent with the bench scale results. The DR ability of PAM is reduced upon the addition of OTAC. At low concentrations of PAM, the effect of OTAC on the DR behaviour is more pronounced. The DR behaviour of polymer solutions is strongly influenced by the nature of water (DI or tap).

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“…The estimated molecular area using the Frumkin model is exactly the same as that reported by He et al [8] for one of the SDBS isomers adsorption at the air-liquid interface under similar experimental conditions using neutron reflectivity. However, Zhang et al [15] reported a molecular area of ≈53 Å 2 for SDBS adsorption at the air-water interface using neutron reflectivity; this area is slightly higher than that estimated using the Langmuir-Szyszkowski model. It is known that the presence of counter-ions enhances surfactant adsorption [16] (more packing), which might explain the lower molecular area of SDBS reported in this study relative to that reported by Zhang et al [15] for SDBS adsorption at the air-water interface.…”

Section: Sdbs Adsorption At the Air-liquid Interfacementioning

confidence: 87%

“…However, Zhang et al [15] reported a molecular area of ≈53 Å 2 for SDBS adsorption at the air-water interface using neutron reflectivity; this area is slightly higher than that estimated using the Langmuir-Szyszkowski model. It is known that the presence of counter-ions enhances surfactant adsorption [16] (more packing), which might explain the lower molecular area of SDBS reported in this study relative to that reported by Zhang et al [15] for SDBS adsorption at the air-water interface. Despite the small difference in the estimated molecular area using the Langmuir-Szyszkowski and Frumkin models, the two models fit the experimental data quite well, with the Langmuir-Szyszkowski model is slightly better in tracking the experimental data.…”

Section: Sdbs Adsorption At the Air-liquid Interfacementioning

confidence: 87%

Adsorption of an anionic surfactant at air-liquid and different solid-liquid interfaces from solutions containing high counter-ion concentration

2015

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The self-assembly (adsorption) of the anionic surfactant, sodium dodecylbenzenesulphonate (SDBS), at airliquid and different (octadecanethiol, β-mercaptoethanol, α-lipoic acid) solid-liquid interfaces from aqueous solutions containing high concentrations of counter-ion has been investigated. SDBS adsorption at the solid-liquid interfaces was obtained using surface plasmon resonance (SPR) while its adsorption at the air-liquid interface was extracted from surface tension measurements. The results have demonstrated that SDBS packing at the air-liquid interface is similar to its packing at the hydrophobic octadecanethiol-liquid interface. Additionally, SDBS packing at the three solid-liquid interfaces increases with increasing surface hydrophobicity, irrespective whether the surface is neutral or negatively charged. Nonetheless, SDBS adsorption is always within monolayer coverage (no evidence of bilayer or admicelle formation). The results have also revealed that SDBS affinity for the solid-liquid interfaces increases with increasing surface hydrophobicity. Furthermore, SDBS affinity for the air-liquid interface is more than 10-fold its affinity for the solid-liquid interfaces.

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The role of electrolyte and polyelectrolyte on the adsorption of the anionic surfactant, sodium dodecylbenzenesulfonate, at the air–water interface

Cited by 24 publications

References 24 publications

Benchmarking the Self‐Assembly of Surfactin Biosurfactant at the Liquid–Air Interface to those of Synthetic Surfactants

Benchmarking the Self‐Assembly of Surfactin Biosurfactant at the Liquid–Air Interface to those of Synthetic Surfactants

Effect of cationic surfactant addition on the drag reduction behaviour of anionic polymer solutions

Adsorption of an anionic surfactant at air-liquid and different solid-liquid interfaces from solutions containing high counter-ion concentration

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