Intermicellar interaction in surfactant solutions; a review study

Javadian, Soheila; Kakemam, Jamal

doi:10.1016/j.molliq.2017.06.117

Cited by 52 publications

(26 citation statements)

References 138 publications

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“…These results are in agreement with previous findings [6,21]. Previously the effect of increasing the content of EG in the solution on the α and CMC was explained by studying the effects of dielectric constant in the medium [22]. Addition of EG affects both the interactions between hydrophobic groups and the interactions between hydrophilic groups in the surfactants.…”

Section: Cmc and Interfacial Propertiessupporting

confidence: 92%

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Co-solvent Effect on Spontaneous Formation of Large Nanoscale Structures in Catanionic Mixtures in the Anionic-Rich Region

et al. 2019

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The aggregation behavior was investigated in mixtures of sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) (anionic-rich catanionic) solutions. The study was conducted in solutions of water-ethylene glycol (EG) by means of surface tension, conductometry, cyclic voltammetry, zeta potential measurements, transmission electron microscopy (TEM) and dynamic light scattering (DLS) techniques. The degree of counterion dissociation (α), critical micelle concentration, aggregation numbers, interfacial properties, interparticle interaction parameters, and morphology of aggregates were determined. Based on regular solution theory, the cosolvent effects between SDS and CTAB as surfactants were also analyzed for both mixed monolayers at mixed micelles (β M) and the air/liquid interface (β σ). It was shown that the formation of large aggregates occurred in the presence of an excess of anionic surfactant. A phase transition from cylindrical micelles to spherical micelles in the anionic-rich regime was observed with an increase in the EG volume fraction. The inter particle interactions were assessed in terms of cosolvent effects on the micellar surface charge density and the cylindrical-to-spherical morphology change. Zeta potential and size of the aggregates were determined using dynamic light scattering and confirmed the models suggested for the processes taking place in each system.

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Section: Cmc and Interfacial Propertiessupporting

confidence: 92%

“…Journal of Solution Chemistry (2020) 49:[16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] …”

mentioning

confidence: 99%

Co-solvent Effect on Spontaneous Formation of Large Nanoscale Structures in Catanionic Mixtures in the Anionic-Rich Region

et al. 2019

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“…For those purposes the stability of the system is of utmost importance to provide stable and repeatable adsorption, carrying and release of a drug. 16 Gemini surfactants are extremely surface active at the CMC (two-fold decrease of the surface tension of water). However, the lower values of CMC do not usually say much about the probable morphology of the aggregates except the fact that the broad transition region from monomers to stable aggregates is observed in the case of small micelles.…”

Section: Introductionmentioning

confidence: 99%

Clear distinction between CAC and CMC revealed by high-resolution NMR diffusometry for a series of bis-imidazolium gemini surfactants in aqueous solutions

et al. 2018

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“…The effect of surfactant type, molecular structure, length of hydrophobic/hydrophilic chains of the surfactants and the concentration ratios between the components in the mixture on molecular interactions in surfactant systems has been a rich field of research [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. It was found that the mixtures of structurally homologous surfactants usually behave similar to ideal solutions [1,12,13], while the mixtures of structurally different compounds such as ionic and nonionic surfactants often show nonideal behavior [8][9][10][13][14][15][16][17][18][19][20][21][22]. In many cases due to a complex interplay of intermolecular forces between the components, the composition of the mixed micelles and mixed adsorbed layer at the air/solution interface is notably differ compared to the composition of the bulk solution [1,2,[8][9][10][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…It was found that the mixtures of structurally homologous surfactants usually behave similar to ideal solutions [1,12,13], while the mixtures of structurally different compounds such as ionic and nonionic surfactants often show nonideal behavior [8][9][10][13][14][15][16][17][18][19][20][21][22]. In many cases due to a complex interplay of intermolecular forces between the components, the composition of the mixed micelles and mixed adsorbed layer at the air/solution interface is notably differ compared to the composition of the bulk solution [1,2,[8][9][10][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Molecular Interactions in Binary Surfactant Solutions: Effect of pH

Kochkodan¹,

Максін²,

Antraptseva³

et al. 2019

Period. Polytech. Chem. Eng.

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By using surface tension and conductivity measurements, the colloid-chemical properties of the mixtures of cationic hexadecylpyridinium bromide with nonionic Triton X-100 surfactants were investigated both in the bulk solution and at air/solution interface at different pH values. The composition of mixed micelles and adsorption layers, parameters of molecular interactions in mixed micelles βm and adsorption layers βσ, as well as standard free energies of micelle formation ΔG0mic and adsorption ΔG0ads were calculated. It was found that molecules of the nonionic surfactant presumably dominate in the mixed micelles and adsorption layers. It was shown that βm and βσ have negative values, which indicate the strengthening of intermolecular interactions in the mixed micelles and adsorption layers. Based on the data obtained, it was suggested that ion-dipole interactions are involved in the formation of intermolecular structures between nonionic and cationic surfactants in aqueous solution and at the air-solution interface. It was shown that βm, βσ as well as ΔG0mic and ΔG0ads parameter depends on the solution pH value. The complex interplay of ion-dipole, protonation and chelation processes, which occur in the surfactant mixtures at different pH and affect the strength of intermolecular interaction, should be taken into account for data analysis.

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Intermicellar interaction in surfactant solutions; a review study

Cited by 52 publications

References 138 publications

Co-solvent Effect on Spontaneous Formation of Large Nanoscale Structures in Catanionic Mixtures in the Anionic-Rich Region

Co-solvent Effect on Spontaneous Formation of Large Nanoscale Structures in Catanionic Mixtures in the Anionic-Rich Region

Clear distinction between CAC and CMC revealed by high-resolution NMR diffusometry for a series of bis-imidazolium gemini surfactants in aqueous solutions

Molecular Interactions in Binary Surfactant Solutions: Effect of pH

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