Formation and coexistence of the micelles and vesicles in mixed solution of cationic and anionic surfactant

Huang, Jianbin; Guo, Zhao

doi:10.1007/bf00654013

Cited by 104 publications

(68 citation statements)

References 7 publications

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“…The variation of hydrophilic head groups has no obvious effect on vesicle formation in this kind of systems. This is different from the situation of common cationic-anionic surfactant mixed systems (2). For example, when the head group changed from trimethylammonium to triethylammonium, there was no difference in vesicle formation as shown in Table 4.…”

Section: Vesicle Formation In Hpam and Different Cationic Surfactant mentioning

confidence: 48%

See 1 more Smart Citation

Spontaneous Vesicle Formation in Aqueous Mixtures of Cationic Surfactants and Partially Hydrolyzed Polyacrylamide

Huang

Zhu

et al. 2001

Journal of Colloid and Interface Science

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Section: Vesicle Formation In Hpam and Different Cationic Surfactant mentioning

confidence: 48%

“…The solution is optically transparent when the volume ratio of ethanol/water is higher than 0.5. The vesicle stability in these systems is similar to that of 1 : 1 mixed cationic and ionic surfactant systems (2,18), and better than that of the phospholipid liposome and polymerized vesicle systems (19).…”

Section: Vesicle Stabilitymentioning

confidence: 72%

Spontaneous Vesicle Formation in Aqueous Mixtures of Cationic Surfactants and Partially Hydrolyzed Polyacrylamide

Huang

Zhu

et al. 2001

Journal of Colloid and Interface Science

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“…Since the initial work by Hargreaves and Deamer 11 and Kaler and co-workers, 7,[12][13][14] several reports have been presented addressing vesiculation of catanionic mixtures. [15][16][17][18][19] Theoretical models accounting for the stability of these vesicles have also been proposed. [20][21][22] However, it is clear that further structural and phase behavior characterization of this type of vesicle-forming system is needed, so that a more fundamental understanding of vesiculation phenomena can be attained.…”

Section: Introductionmentioning

confidence: 99%

Vesicle Formation and General Phase Behavior in the Catanionic Mixture SDS−DDAB−Water. The Anionic-Rich Side

et al. 1998

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Catanionic mixtures are aqueous mixtures of oppositely charged surfactants which display novel phase behavior and interfacial properties in comparison with those of the individual surfactants. One phase behavior property is the ability of these systems to spontaneously form stable vesicles at high dilution. The phase behavior of the mixture sodium dodecyl sulfate (SDS) -didodecyldimethylammonium bromide (DDAB) in water has been studied in detail, and two regions of isotropic vesicular phases (anionic-rich and cationic-rich) were identified. Cryo-transmission electron microscopy allowed direct visualization of relatively small and polydisperse unilamellar vesicles on the SDS-rich side. Monitoring of the microstructure evolution from mixed micelles to vesicles as the surfactant mixing ratio is varied toward equimolarity was also obtained. Further information was provided by water self-diffusion measurements by pulsed field gradient spin-echo NMR. Water molecules can be in fast or slow exchange between the inside and outside of the vesicle with respect to the experimental time scale, depending on membrane permeability and vesicle size. For the SDSrich vesicles, a slow-diffusing component of very low molar fraction observed for the echo decays was traced down to very large vesicles in solution. Light microscopy confirmed the presence of vesicles of several microns in diameter. Thus, polydispersity seems to be an inherent feature of the system.

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“…From the pioneering studies by Kaler on oppositely charged single tailed surfactants [29][30][31][32][33][34] numerous contributions have been reported on the spontaneous vesicle formation and micelle-vesicle transitions produced as a function of the surfactant ratio in the mixture [35][36][37][38][39][40][41]. Similar vesicle formation should be expected when a cationic surfactant is mixed with an ionic liquid displaying anionic surfactant-like behavior.…”

Section: Introductionmentioning

confidence: 80%

Catanionic surfactant formation from the interaction of the cationic surfactant hexadecyltrimethylammonium bromide (CTAB) and the ionic liquid 1-butyl-3-methylimidazolium octyl sulfate (bmim-octyl SO4) in aqueous solution

Comelles

Ribosa

González

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The interaction between the cationic surfactant Hexadecyltrimethylammonium bromide (CTAB) and the ionic liquid 1-butyl-3-methylimidazolium octyl sulfate (bmim-octylSO 4 ) in aqueous solution has been investigated at two total concentrations (0.5 and 10 mM) and different CTAB mole fractions ( CTAB ).Samples of different physical appearance were obtained depending on  CTAB suggesting different kind of aggregates. Bluish solutions ( CTAB from 0.1 to 0.6) were assigned to vesicles of the catanionic surfactant formed (CTA-octylSO 4 ), whereas clear and isotropic solutions ( CTAB  0.6) corresponded to mixed micelles. Surface tension, electrical conductivity, absorbance and dynamic light scattering (DLS) measurements were performed with the aim of correlating properties changes with the aggregation structures. The critical aggregation concentration (cac) and the surface tension value at the cac ( cac ) were much lower for the mixtures than for the individual components. Thiis finding reveals the 3 exceptional surface activity of these mixtures, attributable to the formation of the CTA-octylSO 4 catanionic surfactant. Once the catanionic surfactant is formed it makes no sense to consider anymore the initial CTAB / bmim-octylSO 4 binary system but a new one composed by CTA-octylSO 4 and the excess of bmimoctylSO 4 or CTAB. On the basis of this consideration the surface activity parameters have been recalculated.

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Formation and coexistence of the micelles and vesicles in mixed solution of cationic and anionic surfactant

Cited by 104 publications

References 7 publications

Spontaneous Vesicle Formation in Aqueous Mixtures of Cationic Surfactants and Partially Hydrolyzed Polyacrylamide

Spontaneous Vesicle Formation in Aqueous Mixtures of Cationic Surfactants and Partially Hydrolyzed Polyacrylamide

Vesicle Formation and General Phase Behavior in the Catanionic Mixture SDS−DDAB−Water. The Anionic-Rich Side

Catanionic surfactant formation from the interaction of the cationic surfactant hexadecyltrimethylammonium bromide (CTAB) and the ionic liquid 1-butyl-3-methylimidazolium octyl sulfate (bmim-octyl SO4) in aqueous solution

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