Micellization of a Cationic Surfactant in Mixed Aqueous and Non-aqueous Solvent Systems

Grace, Agbizu Cookey; Daniel, Ozioma Uzoma

doi:10.4314/jasem.v19i4.2

Cited by 3 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of micelles largely depends on the hydrophobicity of surfactants as well as solvent medium. − Therefore, it is important to study the role of solvent media to understand the process of micellization. − Previous studies on the cosolvent effect on the micellization process have been reported in terms of intermolecular interactions between water and cosolvent, − and the results of such studies have been interpreted in terms of the water structure-making or structure-breaking ability of cosolvents . To study the effect of cosolvents on the micellization of ionic surfactants, two of the most common industrially important cosolvents, glycerol (polar protic) and DMSO (polar aprotic), have been selected.…”

Section: Introductionmentioning

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

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

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

View full text Add to dashboard Cite

show abstract

“…The CMC and the degree of dissociation are found to increase propositionally with the concentration of the cosolvent. However, Grace and Daniel et al showed that the CMC increased and the degree of counterion dissociation decreased with an increase in concentration of the cosolvent. Shirzad and Sadeghi looked at the impact of short-chain alcohols as cosolvents on micellization.…”

Section: Effect Of Cosolvent On Amino Acid–surfactant Interactionsmentioning

confidence: 99%

“…These surface-active molecules are used primarily as detergents, wetting agents, and softeners in soap manufacturing and pharmaceutical industries. Surfactants are classified as cationic (a positively charged head such as mono-alkyl quaternary systems), anionic (negatively charged hydrophilic head, for example, alkyl benzenesulfonates), and non-ionic (does not have an electrical charge), − and investigations on amino acid–surfactant interactions have been present in the center of active research for the past few decades . Surfactants are wetting agents that lower surface tension and spread.…”

Section: Introductionmentioning

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

View full text Add to dashboard Cite

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.

show abstract

Double-imprinted polymer based on cross-linked poly(vinylimidazole–trimethylolpropane trimethacrylate) in solid phase extraction for determination of lead from wastewater samples by UV–vis spectrophotometry

Silva

Pires

Borges

2019

International Journal of Environmental Analytical Chemistry

View full text Add to dashboard Cite

Micellization of a Cationic Surfactant in Mixed Aqueous and Non-aqueous Solvent Systems

Cited by 3 publications

References 10 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

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

Double-imprinted polymer based on cross-linked poly(vinylimidazole–trimethylolpropane trimethacrylate) in solid phase extraction for determination of lead from wastewater samples by UV–vis spectrophotometry

Contact Info

Product

Resources

About