Mixed micelles of binary surfactant mixtures Tween 40 – Na-3,12-dioxo-5β-cholanate and Tween 80 – Na-3,12-dioxo-5β-cholanate and their thermodynamic description and characterization

Poša, Mihalj

doi:10.1016/j.cherd.2014.05.022

Cited by 35 publications

(27 citation statements)

References 30 publications

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“…However, these interactions should be different for TX114 and Tween 80 because both the hydrophobic and hydrophilic parts of TX114 molecules are smaller than the corresponding parts in Tween 80 (at T = 293 K and C = 10 -2 M u V = 514.43 and 1129.33 9 10 6 m 3 mol -1 for TX114 and Tween 80, respectively). While the hydrophobic parts of Tween 80 are all aliphatic, this part of TX114 has an aromatic ring in the chain [19,20]. In addition, it is known that the oxyethylene group (EO), from which the hydrophilic part of surfactants is built, can be associated with two molecules of water [21] or that most of water molecules are mechanically trapped in the polyoxyethylene chains of nonionic surfactants, with 5.2-10.5 water molecules per oxyethylene units [22,23].…”

Section: Resultsmentioning

confidence: 99%

Aggregation behavior of Triton X-114 and Tween 80 at various temperatures and concentrations studied by density and viscosity measurements

Taraba

2016

J Therm Anal Calorim

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Measurements of density and viscosity for the aqueous solutions of the nonionic surfactants, Triton X-114 and Tween 80, have been taken in the temperature range T = 293-318 K at an interval of 5 K. On the basis of the obtained results, various parameters have been calculated and analyzed including concentration of surfactants in the bulk phase and temperature, for example volume expansivity and fractional free volume, which indicates that water around the Tween 80 molecules is more loosely bound than the Triton X-114. Moreover, it was proved that depending on the temperature and concentration of studied surfactants they can behave as a water structure breaker or maker.

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Section: Resultsmentioning

confidence: 99%

Aggregation behavior of Triton X-114 and Tween 80 at various temperatures and concentrations studied by density and viscosity measurements

Taraba

2016

J Therm Anal Calorim

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“…The equations and interpretations get varied according to the molar fraction definition (Letellier et al, 2011;Poša, 2014Poša, , 2019.…”

Section: Various Theoretical Modelsmentioning

confidence: 99%

“…In the case of mixed surfactant systems, the determination of the molar fraction of each surfactant in the aggregate iss difficult, which is needed to interpret the behavior of surfactant mixtures by using Clint relation as well as regular solution theory (RST). The equations and interpretations get varied according to the molar fraction definition (Letellier et al, 2011 ; Poša, 2014 , 2019 ). In the case of ideal mixing, there is no net interaction between the components of the mixed system.…”

Section: Various Theoretical Modelsmentioning

confidence: 99%

Scrutinizing Self-Assembly, Surface Activity and Aggregation Behavior of Mixtures of Imidazolium Based Ionic Liquids and Surfactants: A Comprehensive Review

Kumar

Kaur

2021

Front. Chem.

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The desire of improving various processes like enhanced oil recovery (EOR), water treatment technologies, biomass extraction, organic synthesis, carbon capture etc. in which conventional surfactants have been traditionally utilized; prompted various researchers to explore the self-assembly and aggregation behavior of different kinds of surface-active molecules. Ionic liquids (ILs) with long alkyl chain present in their structure constitute the advantageous properties of surfactant and ILs, hence termed as surface-active ionic liquids (SAILs). The addition of ILs and SAILs significantly influence the surface-activity and aggregation behavior of industrially useful conventional surfactants. After a brief review of ILs, SAILs and surfactants, the prime focus is made on analyzing the self-assembly of SAILs and the mixed micellization behavior of conventional surfactants with different ILs.

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“…For the water phase, demineralized water was used with the short-chained (M W = 1280 g/mol) hydrophilic surfactant, Tween 40 (Carl Roth GmbH, Karlsruhe, Germany), added in different concentrations. Tween 40 was applied at 1 wt% as typical concentration of application and at 0.003 wt%, the averaged critical micelle concentration (cmc) of Tween 40 described in previous research [33][34][35]. Additionally, the stability of droplets without additional lipophilic surfactant and without Tween 40 was examined, resulting in nine different formulations for each experiment.…”

Section: Methodsmentioning

confidence: 99%

Oil Droplet Coalescence in W/O/W Double Emulsions Examined in Models from Micrometer- to Millimeter-Sized Droplets

Leister

Yan

Karbstein

2022

Colloids and Interfaces

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Water-in-oil-in-water (W1/O/W2) double emulsions must resist W1–W1, O–O and W1–W2 coalescence to be suitable for applications. This work isolates the stability of the oil droplets in a double emulsion, focusing on the impact of the concentration of the hydrophilic surfactant. The stability against coalescence was measured on droplets ranging in size from millimeters to micrometers, evaluating three different measurement methods. The time between the contact and coalescence of millimeter-sized droplets at a planar interface was compared to the number of coalescence events in a microfluidic emulsion and to the change in the droplet size distributions of micrometer-sized single and double emulsions. For the examined formulations, the same stability trends were found in all three droplet sizes. When the concentration of the hydrophilic surfactant is reduced drastically, lipophilic surfactants can help to increase the oil droplets’ stability against coalescence. This article also provides recommendations as to which purpose each of the model experiments is suited and discusses advantages and limitations compared to previous research carried out directly on double emulsions.

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Mixed micelles of binary surfactant mixtures Tween 40 – Na-3,12-dioxo-5β-cholanate and Tween 80 – Na-3,12-dioxo-5β-cholanate and their thermodynamic description and characterization

Cited by 35 publications

References 30 publications

Aggregation behavior of Triton X-114 and Tween 80 at various temperatures and concentrations studied by density and viscosity measurements

Aggregation behavior of Triton X-114 and Tween 80 at various temperatures and concentrations studied by density and viscosity measurements

Scrutinizing Self-Assembly, Surface Activity and Aggregation Behavior of Mixtures of Imidazolium Based Ionic Liquids and Surfactants: A Comprehensive Review

Oil Droplet Coalescence in W/O/W Double Emulsions Examined in Models from Micrometer- to Millimeter-Sized Droplets

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