Studies on Thermodynamics of Micellization and Solvophobic Interactions of Novel Surfactant–Cr(III) Complexes in Non-aqueous Solvents

Kumaraguru, N.; Santhakumar, Kannappan; Kalyanasundharam, S.

doi:10.1007/s10953-011-9742-y

Cited by 9 publications

(7 citation statements)

References 55 publications

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“…Remarkably, the volume of the surfactant with two hydrophobic chains was often twice that of the singlechain surfactant. Moreover, because the critical chain length l c was difficult to obtain, it was often estimated to be the first approximate value of the fully extended length l of the hydrophobic chain, 31 obtained from eq 7, with a 0 being approximately equal to the molecular cross-sectional area A min of the adsorption process.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Surface Activity, Wettability, and Aggregation Behavior of Ecofriendly Fluorocarbon Surfactant Based on Double Perfluorinated Branched Short Chains

Peng,

Sha,

Zhang

et al. 2024

Langmuir

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This article reports the synthesis of a novel sulfonated fluorocarbon surfactant (SFDC) containing double C 6 perfluorinated branched short chains and compares its surface properties with a similar structured compound (SFDC-L) in solutions. The critical micelle concentration (CMC) and the corresponding surface tension (γ CMC ) of SFDC aqueous solution are 9.77 × 10 −3 mmol/L and 22.15 mN/m, respectively, indicating that SFDC has excellent surface properties. Besides, the addition of nhexyltrimethylammonium bromide (HTAB) could further enhance the surface properties of SFDC. Meanwhile, the micellization, aggregation behavior, wettability, and adsorption at the air−water interface of SFDC and SFDC/HTAB mixture aqueous solutions are systematically investigated. Both SFDC and SFDC/HTAB show excellent wettability at low concentrations. The aggregation of SFDC and SFDC/HTAB mixtures in aqueous solution could be clearly seen as vesicles and rod-like micelles on TEM micrographs.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Surface Activity, Wettability, and Aggregation Behavior of Ecofriendly Fluorocarbon Surfactant Based on Double Perfluorinated Branched Short Chains

Peng,

Sha,

Zhang

et al. 2024

Langmuir

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“…Table 2 shows the changes in the CMC with the addition of 3 wt% of n-propanol, n-butanol and n-pentanol at 298 K. The CMC decreased when various n-alcohols were present in solution compared to aqueous solution. This may be attributed to the incorporation of alcohol molecules within the micelle thus increasing the length between polar heads that causing the repulsive interactions to decrease [20]. Also, the hydrophobic part of alcohols may enhance the hydrophobic character of the surfactant that mainly favors micellization [3].…”

Section: Critical Micelle Concentration (Cmc)mentioning

confidence: 99%

“…3 Electrical conductivity versus molar concentration of SSTO: a at different temperatures in aqueous solution and b in 3 wt% n-alcohol solution at 298 K (DS°m ic ) of micellization for SSTO were calculated from Eqs. 7-9 [7,20].…”

Section: Thermodynamic Parameters Of Micellization and Adsorptionmentioning

confidence: 99%

“…Micellization is an exothermic process (since DH°m ic is negative) with attractive London-dispersion interactions playing a major role in micelle formation [33]. This exothermic behavior may be explained as a result of the decrease in energy required to break up the iceberg water structure around the hydrophobic chains [20]. DH°m ic was dependent on temperature and became more negative at higher temperatures.…”

Section: Thermodynamic Parameters Of Micellization and Adsorptionmentioning

confidence: 99%

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Synthesis and Physico‐Chemical Properties of Sodium 3‐Oxo‐2‐(3‐(4‐sulphonatophenyl)triaz‐2‐enyl)octadecanoate Anionic Surfactant

El-Sharkawy

Mead

Reheim

et al. 2016

J Surfact & Detergents

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The novel anionic surfactant sodium 3-oxo-2-(3-(4-sulphonatophenyl)triaz-2-enyl)octadecanoate (SSTO) was prepared from renewable raw materials; glycine and palmitic acid. Surface and bulk properties of SSTO were investigated by surface tension and electrical conductivity techniques at 298, 308, 318 and 328 K. Surface properties including critical micelle concentration (CMC), maximum surface excess concentration (C max ), minimum area per molecule (A min ), surface tension at CMC (c CMC ), effectiveness of surface tension reduction (P CMC ), efficiency of surface adsorption (pC 20 ), and degree of counterion dissociation (a) were determined. The thermodynamic parameters of micellization (DG°m ic , DH°m ic and DS°m ic ) and adsorption (DG°a d , DH°a d and DS°a d ) were also investigated at 298, 308, 318 and 328 K. The effect of 3 wt% n-propanol, n-butanol and n-pentanol on surface tension and conductivity at 298 K was also determined.

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“…By adjusting the mixed solvent composition of the medium, we can tune both the aggregation processes as well as the properties of aggregates (micelles/vesicles). However, investigations regarding the aggregation and interfacial behavior of metallosurfactants in water–organic solvent mixed medium and non‐aqueous medium are limited (Chandar et al, 2011; Domínguez‐Gutiérrez et al, 2006; Domínguez‐Gutiérrez et al, 2008; Kumaraguru et al, 2011; Kumaraguru & Santhakumar, 2006; Kumaraguru & Santhakumar, 2009; Mahato et al, 2011; Tung et al, 2008), but it is significant to take up suchlike research investigations keeping in view their promising applications in different fields. Ethylene glycol (EG) is a principal additive compound owing to its congruity in properties to H 2 O in respect of higher cohesive energy, dielectric constant, and hydrogen bond formation capability.…”

Section: Introductionmentioning

confidence: 99%

Aggregation and adsorption behavior of cobalt‐based metallosurfactant in water–ethylene glycol media forming worm‐like micelles

Charingia

Shergujri

Suting

et al. 2022

J Surfact & Detergents

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The cobalt based metallosurfactant cis-chlorobis(ethylenediamine)hexadecylaminecobalt(III) chloride (CHCC) has been prepared and well characterized by utilizing elemental analysis, NMR ( 1 H, 13 C), FT-IR and UV-Vis spectroscopy. The CHCC metallosurfactant shows thermal stability up to 168 C. The micellization behavior of the synthesized CHCC metallosurfactant has been investigated systematically by the tensiometric, conductometric, and fluorescence techniques. The critical micelle concentration (cmc) values of CHCC have been determined in various water-ethylene glycol mixtures ranging from 0 to 100 weight % of ethylene glycol at 293.15, 298.15, 303.15, and 308.15 K. The physicochemical parameters namely counterion binding constant, surface pressure, surface excess, surface area covered per CHCC metallosurfactant molecule, free energy minimum, standard free energies of micellization and adsorption, standard enthalpy and entropy of micellization, and Gibb's free energy of transfer have been calculated. The hydrodynamic diameters and zeta potentials of the CHCC metallomicelles have been measured by dynamic light scattering method. Transmission electron microscopy was employed to confirm the presence of worm-like micelles.

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Studies on Thermodynamics of Micellization and Solvophobic Interactions of Novel Surfactant–Cr(III) Complexes in Non-aqueous Solvents

Cited by 9 publications

References 55 publications

Surface Activity, Wettability, and Aggregation Behavior of Ecofriendly Fluorocarbon Surfactant Based on Double Perfluorinated Branched Short Chains

Surface Activity, Wettability, and Aggregation Behavior of Ecofriendly Fluorocarbon Surfactant Based on Double Perfluorinated Branched Short Chains

Synthesis and Physico‐Chemical Properties of Sodium 3‐Oxo‐2‐(3‐(4‐sulphonatophenyl)triaz‐2‐enyl)octadecanoate Anionic Surfactant

Aggregation and adsorption behavior of cobalt‐based metallosurfactant in water–ethylene glycol media forming worm‐like micelles

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