Interfacial Composition of Gemini Surfactant Micelles Determined by Chemical Trapping

Menger, Fredric M.; Keiper, Jason S.; Mbadugha, Bessie; Caran, Kevin L.; Romsted, Laurence S.

doi:10.1021/la0003692

Cited by 87 publications

(83 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated values of α are listed in Table 1. It is seen that, as originally found (4) and in agreement with the results of the chemical trapping method (42), α increases with the spacer carbon number, but much less than originally reported (4). The values of G…”

Section: Thermodynamics Of Micellization Of 12-s-12 Surfactantssupporting

confidence: 89%

Alkanediyl-α,ω-Bis(dimethylalkylammonium Bromide) Surfactants

Grosmaire

Chorro

et al. 2002

Journal of Colloid and Interface Science

118

View full text Add to dashboard Cite

Section: Thermodynamics Of Micellization Of 12-s-12 Surfactantssupporting

confidence: 89%

Alkanediyl-α,ω-Bis(dimethylalkylammonium Bromide) Surfactants

Grosmaire

Chorro

et al. 2002

Journal of Colloid and Interface Science

118

View full text Add to dashboard Cite

“…The reports of temperature dependence of cmc are scarce. Such a report on 12-s-12 (s = 2, 3, 4) is available in the literature [28]. The cmc values increased with temperature for the three surfactants studied, which is in good agreement with our results.…”

Section: Discussionsupporting

confidence: 92%

Preparation of a New Oligomeric Surfactant:N,N,N′,N″,N″‐Pentamethyl Diethyleneamine—N,N″‐Di‐[Tetradecylammonium Bromide] and the Study of its Thermodynamic Properties

Alehyen

Bensajjay

Achouri³

et al. 2009

J Surfact & Detergents

View full text Add to dashboard Cite

A new oligomeric surfactant: N,N,N 0 ,N 00 ,N 00 -pentamethyl diethyleneamine-N,N 00 -di-[tetradecylammonium bromide] referred to as 14-2-N(CH 3 )-2-14 was synthesized, purified and characterized by Elemental Analysis, 1 H and 13 C NMR and Electrospray. The micellar properties of this compound were determined by electrical conductivity and surface tension methods. Optical microscopy was also employed to study the behavior of anhydrous surfactant and the binary water/surfactant system as a function of temperature. The critical micellar concentration (cmc), degree of counterion binding and thermodynamic parameters of micellization (standard molar Gibbs energy, enthalpy and entropy of micellization) were determined by electrical conductivity measurements in the temperature range [24-54°C]. Surface tension measurements also provide information about the dependence of the surface tension at the cmc (c cmc ), pC 20 (negative logarithm of the surfactant's molar concentration C 20 , required to reduce the surface tension by 20 mN/m, the surface excess (C max ) at air/solution interface, the minimum area per surfactant molecule at the air/solution interface (Amin), surface pressure at the cmc (G cmc ), critical packing parameter(CPP) and the standard free energies of micellization (DG 0 m ) and of adsorption (DG 0 ads ).

show abstract

“…Both DTAB and 12-4-12 gave a value of 0.30, which is a normal value for an ionic surfactant in Millipore water. We [24] and others [25][26][27] have previously reported lower a-values for 12-2-12 and 12-3-12, i.e., geminis with shorter linking units than the one we are studying here. Evidently a C4 spacer is long enough to allow the same degree of micelle ionization as for micelles composed of monomeric surfactants of the same hydrocarbon tail length and the same type of polar head group.…”

Section: Resultscontrasting

confidence: 52%

Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid

Mahdavian

Tehrani‐Bagha

Holmberg

2011

J Surfact & Detergents

View full text Add to dashboard Cite

A cationic gemini surfactant, N,N 0 -didodecyl-N,N,N 0 ,N 0 -tetramethyl-1,4-butanediammonium dibromide (12-4-12) and the corresponding monomeric surfactant dodecyltrimethylammonium bromide were compared with respect to corrosion inhibition efficiency in 1 M hydrochloric acid solution. Polarization and electrochemical impedance spectroscopy were used to evaluate corrosion inhibition. The 12-4-12 surfactant showed an extremely high corrosion inhibition efficiency at very low concentration. Surface tension measurements performed under the strongly acidic conditions revealed that the gemini surfactant is remarkably electrolyte tolerant, which is beneficial for adsorption at the steel surface.

show abstract

Interfacial Composition of Gemini Surfactant Micelles Determined by Chemical Trapping

Cited by 87 publications

References 44 publications

Alkanediyl-α,ω-Bis(dimethylalkylammonium Bromide) Surfactants

Alkanediyl-α,ω-Bis(dimethylalkylammonium Bromide) Surfactants

Preparation of a New Oligomeric Surfactant:N,N,N′,N″,N″‐Pentamethyl Diethyleneamine—N,N″‐Di‐[Tetradecylammonium Bromide] and the Study of its Thermodynamic Properties

Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid

Contact Info

Product

Resources

About