Thermodynamic Consideration of Mixtures of Surfactants in Adsorbed Films and Micelles

Aratono, Makoto; Villeneuve, Masumi; Takiue, Takanori; Ikeda, Norihiro; Iyota, Hidemi

doi:10.1006/jcis.1997.5369

Cited by 117 publications

(178 citation statements)

References 8 publications

Supporting

Mentioning

174

Contrasting

Order By: Relevance

“…1 that the X 2 M values are smaller than the X 2 values at the same cmc, which suggests that the micelle particle contains more DTAB molecules, i.e. bromide ions, compared to the bulk phase, an observation which is consistent with the theory that bromide ions are preferable to chloride ones for adsorption to the charged plane 11 . Curve 4 shows the micelle composition estimated from the CVI measurement using Eq.…”

Section: Thermodynamic Consideration Of Mixed Micellessupporting

confidence: 77%

See 1 more Smart Citation

Study on Colloid Vibration Current in Aqueous Solution of Binary Surfactant Mixtures: Effects of Counterions and Hydrophobic Chains

2016

View full text Add to dashboard Cite

Section: Thermodynamic Consideration Of Mixed Micellessupporting

confidence: 77%

“…It should be emphasized that this equation is valid for the monovalent ionic surfactant mixture system with common ions 11 . As shown in Fig.…”

Section: Thermodynamic Consideration Of Mixed Micellesmentioning

confidence: 99%

Study on Colloid Vibration Current in Aqueous Solution of Binary Surfactant Mixtures: Effects of Counterions and Hydrophobic Chains

2016

View full text Add to dashboard Cite

“…This suggests that the bromide ions are easier to bind to the charged air/water surface, compared to the chloride ions. This is called the preferential adsorption of ions 23) . We can often observe such phenomena for the micelle: the dissociation degree of bromide ion from the spherical micelle is smaller than that of chloride ion 24,25) .…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Surfactant Ions and Binding of Their Counterions at an Air/Water Interface

et al. 2009

View full text Add to dashboard Cite

An expression for the surface tension of an aqueous mixed solution of surfactants and electrolyte ions in the presence of the common ions was derived from the Helmholtz free energy of an air/water surface. By applying the equation to experimental data for the surface tension, the adsorption constant of surfactant ions onto the air/water interface, the binding constant of counterions on the surfactants, and the surface potential and surface charge density of the interface were estimated. The adsorption constant and binding constant were dependent on the species of surfactant ion and counterion, respectively. Taking account of the dependence of surface potential and surface charge density on the concentration of electrolyte, it was suggested that the addition of electrolyte to the aqueous surfactant solution brings about the decrease in the surface potential, the increase in the surface density of surfactant ions, and consequently, the decrease in the surface tension. Furthermore, it was found that the configurational entropy plays a predominant role for the surface tension, compared to the electrical work.

show abstract

“…Since these surfactant molecules possess the common surfactant ion DTA and different counterions Br and Cl , the effect of different constituent ions on IVI has been clarifi ed from a standpoint of their partial molar volume. Furthermore, it has been possible to observe the direct infl uence of counterions on the electrokinetic property of micelle surface, because the dissociation degree of bromide ions from the positively charged surface is different from that of chloride ions [13][14][15] Counterions directly participate in the electrokinetic phenomena of charged particles, and therefore, it is natural that its effect on the ultrasonic vibration current is prominent as shown in Fig. 7 of Ref.…”

Section: Resultsmentioning

confidence: 99%

Effect of Ionic Surfactants on Ion Vibration Current and Colloid Vibration Current

et al. 2010

View full text Add to dashboard Cite

In order to clarify the effect of constituent ions on an electroacoustic phenomenon in an aqueous solution of ionic surfactant, we measured the total vibration current TVI as a function of the molarity of aqueous solution of several ionic surfactants at 298.15 K under atmospheric pressure. The different counterion caused the remarkable change in TVI, while the difference in alkyl chain length of surfactant ion hardly affected TVI. This suggests that the size and/or aggregation number of micelle is not a crucial factor contributing to TVI. Employing the fl uorocarbon surfactant, on the other hand, there appeared a fairly large change compared to the hydrocarbon surfactant. This implies that the density contrast between medium and micelle is signifi cant for TVI.

show abstract

Thermodynamic Consideration of Mixtures of Surfactants in Adsorbed Films and Micelles

Cited by 117 publications

References 8 publications

Study on Colloid Vibration Current in Aqueous Solution of Binary Surfactant Mixtures: Effects of Counterions and Hydrophobic Chains

Study on Colloid Vibration Current in Aqueous Solution of Binary Surfactant Mixtures: Effects of Counterions and Hydrophobic Chains

Adsorption of Surfactant Ions and Binding of Their Counterions at an Air/Water Interface

Effect of Ionic Surfactants on Ion Vibration Current and Colloid Vibration Current

Contact Info

Product

Resources

About