Influence of aquo-organic solvent media on the self-aggregation of sodium dodecyl sulfate (SDS) and its interaction with polyvinylpyrrolidone (PVP)

Mandal, Biplab; Moulik, Satya P.; Ghosh, Soumen

doi:10.1007/s00396-014-3273-1

Cited by 19 publications

(8 citation statements)

References 43 publications

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“…In this case, micellization is inhibited by the presence of cosolvents in the medium. Cosolvents such as glycerol and DMSO, when added to water, increase the CMCs of ionic surfactants by decreasing the polarity of water and increasing the solubility of hydrocarbon chains, leading to increases in the hydrophobic character of the solvent medium. ,,, Increases in the CMC/ X CMC values of SDBS and CPC on addition of cosolvents may be due to different properties of glycerol and DMSO. In the case of glycerol, the increase in the X CMC of surfactants can be attributed to the decrease in the dielectric constant of the medium, resulting in better solubility of hydrocarbon chains of surfactants in the glycerol–water mixed solvent system .…”

Section: Resultsmentioning

confidence: 99%

Effect of Cosolvents DMSO and Glycerol on the Self-Assembly Behavior of SDBS and CPC: An Experimental and Theoretical Approach

et al. 2018

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The study of the effect of cosolvents on the micellization of ionic surfactants is relevant in different industrial applications. In this article, we studied the effects of binary aqueous mixtures of DMSO and glycerol on the micellization and thermodynamic behavior of sodium dodecyl benzenesulfonate (SDBS) and cetylpyridinium chloride (CPC) in the range of (293.15–308.15) K. The electrical conductivity method was employed to determine the parameters of micellization such as the critical micellar concentration (CMC) and degree of counterion dissociation (α). The temperature dependence of CMC values was used to calculate other thermodynamic parameters of micellization such as the standard free energy of micellization (ΔG m 0), the standard enthalpy of micellization (ΔH m 0), and the standard entropy of micellization (ΔS m 0). Result analysis showed that the CMCs of both surfactants (SDBS and CPC) were directly proportional to the cosolvent concentration. The standard free energy of micellization (ΔG m 0) was negative in all cases, and it increased with increases in the cosolvent concentration, thereby reducing the driving force for micellization. Quantum chemical calculations and molecular dynamic (MD) simulations were essential to understanding the phenomena and provide a well-supported molecular picture of the micellization process. In this work, a combined experimental and molecular modeling study on the effect of cosolvents such as DMSO and glycerol on the self-assembly behavior of SDBS and CPC was performed. It was found that the supramolecular assembly is inhibited by the presence of glycerol and DMSO because hydrophobic regions in the solvent media increased with increasing concentration of the nonaqueous solvents, imparting cosolvency and promoting the decrease in amphiphilic assembly.

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Section: Resultsmentioning

confidence: 99%

Effect of Cosolvents DMSO and Glycerol on the Self-Assembly Behavior of SDBS and CPC: An Experimental and Theoretical Approach

et al. 2018

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“…The LD-specific dyes 11–13 were further studied for their environmental sensitivity to lipophilic media using concentrations of sodium dodecyl sulfate (SDS), below and above the critical micelle concentration ( ca. 10 mM) 38 in a 5% DMSO/water mixture. Compounds 11 and 12 exhibited increased fluorescence intensity in the presence of SDS, with more intense emission at higher SDS concentrations (ESI, Fig.…”

Section: Resultsmentioning

confidence: 99%

Photophysical characterization and fluorescence cell imaging applications of 4-N-substituted benzothiadiazoles

et al. 2022

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“…The polarity of water is simultaneously lowered, which occurs due to different properties of the cosolvent. 27,28 Shah et al explored the variation of surface tension and viscosity of SDS in the presence of aqueous methanol solutions and observed that methanol has an adverse effect on the surface tension and viscosity of solutions. It is observed that an increase in the viscosity coefficient occurs with an increase in methanol concentration, which may be due to the binding between SDS and the solvent.…”

Section: Effect Of Cosolvent On Amino Acid−surfactant Interactionsmentioning

confidence: 99%

A Review on Interactions between Amino Acids and Surfactants as Well as Their Impact on Corrosion Inhibition

Muhammad

Singh

et al. 2022

ACS Omega

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Amino acid−surfactant interactions are central to numerous studies because of their increased effectiveness in chemical, biological, household and industrial use. This review will focus on the impact and effect of the physicochemical properties, temperature, pH, and surfactant chain length of the amino acid for detailed exploration of amino acids and surfactants in aqueous medium. The impact of cosolvent on self-aggregation, critical micelle concentration (CMC), and binding affinity with other biomolecules, as well as amino acid−surfactant interactions, are the epicenters. The results show that increasing the temperature causes negative enthalpy for ionic surfactants and micellization, implying that micellization and amino acids are thermodynamically spontaneous and exothermic, accompanied by positive entropy. As these physicochemical studies are additive, the amino acid and ionic surfactant interactions provide clues on protein unfolding and denaturation under different media, which further changes with a change in physiological conditions like pH, cosolvent, chain length, and temperature. On varying the pH, the net charge of the amino acid also changes and, subsequently, the binding efficiency of the amino acids to the surfactants. The presence of cosolvent causes a lowering in the hydrophobic chain, which changes the surfactant's CMC. At a reduced CMC, the hydrophobic characteristic of amino acid−surfactant associations is amplified, leading to rapid denaturation of proteins that act as propulsion under the influence of extended chain surfactants. Amino acids are one of the most intriguing classes of chemicals that produce high inhibitory efficacy. Amino acids are also a component of proteins and therefore, found in a significant part of the human body, further making them a promising candidate as corrosion inhibitors. In this review article, authors have also focused on the collection and investigation for application of amino acid−surfactant interactions in corrosion inhibition. Various predictive studies/in silico studies are also reported by many research groups, such as density functional theory (DFT) calculations and molecular dynamics simulations to obtain tentative electronic, structural, and physiochemical characteristics like energies of the highest occupied molecular orbitals and lowest unoccupied molecular orbitals, binding energy, Gibb's free energy, electronegativity, polarizability, and entropy. In silico studies are helpful for the mechanism predictions of the process occurring on metal surfaces.

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Influence of aquo-organic solvent media on the self-aggregation of sodium dodecyl sulfate (SDS) and its interaction with polyvinylpyrrolidone (PVP)

Cited by 19 publications

References 43 publications

Effect of Cosolvents DMSO and Glycerol on the Self-Assembly Behavior of SDBS and CPC: An Experimental and Theoretical Approach

Effect of Cosolvents DMSO and Glycerol on the Self-Assembly Behavior of SDBS and CPC: An Experimental and Theoretical Approach

Photophysical characterization and fluorescence cell imaging applications of 4-N-substituted benzothiadiazoles

A Review on Interactions between Amino Acids and Surfactants as Well as Their Impact on Corrosion Inhibition

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