Variation of surface tension in aqueous solutions of sodium dodecyl sulfate in the flotation bath

Hernáinz, F.; Caro-Bretelle, A. S.

doi:10.1016/s0927-7757(01)00575-1

Cited by 39 publications

(42 citation statements)

References 15 publications

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“…1), 37 mN/m for DTAB (data not shown) and 36 mN/m for CTAB (data not shown). These values proved to be consistent with values obtained by others [1]. CMC values for SDS, DTAB and CTAB in distilled water and in phosphate buffer solution (1/15 M, pH 7.0) are presented in Table 1.…”

Section: Surface Tension Experimentssupporting

confidence: 91%

“…The intersection of linear decline line and the baseline of minimal surface tension ( Fig. 1) was taken as the CMC value of surfactant [1]. The measured value of surface tension in distilled water without surfactant is 72 mN/m, which is in agreement with value given in literature [19].…”

Section: Surface Tension Experimentssupporting

confidence: 82%

“…Surface tension [1], electrical conductivity [2], light scattering [3] [4], and various spectroscopic technique [5][6][7] have been used to measure critical micelle concentration (CMC), aggregate size, and aggregation number of surfactants. Local parameters like micropolarity and microviscosity were studied in order to better understand micellar self-assembly.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of SDS, DTAB and CTAB micelle microviscosities by electron spin resonance

Bahri

Hoebeke

Grammenos

et al. 2006

Colloids and Surfaces A: Physicochemical and Engineering Aspect

151

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Electron spin resonance spectroscopy (ESR) of the nitroxide labelled fatty acid probes (5-, 16-doxyl stearic acid) was used to monitor the micelle microviscosity of three surfactants at various concentrations in aqueous solution: sodium dodecyl sulphate (SDS), dodecyltrimethylammonium bromide (DTAB) and cetyltrimethylammonium bromide (CTAB). At low surfactant concentration, there is no micelle, the ESR probe is dissolved in water/surfactant homogeneous phase and gives his microviscosity. At higher surfactant concentration, an abrupt increase in microviscosity indicates the apparition of micelles and, the solubilization of the probes in micelles. The microviscosity of the three surfactants, in a large surfactant range, was obtained as well as the critical micelle concentration (CMC). The microviscosity increased slightly with the increase in surfactant concentration. Phosphate buffer lowered the CMC value and generally increased the microviscosity.

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Section: Surface Tension Experimentssupporting

confidence: 91%

Section: Surface Tension Experimentssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of SDS, DTAB and CTAB micelle microviscosities by electron spin resonance

Bahri

Hoebeke

Grammenos

et al. 2006

Colloids and Surfaces A: Physicochemical and Engineering Aspect

151

View full text Add to dashboard Cite

show abstract

“…Single chain surfactants have been previously reported, 16,25,49,54 with relatively high surface energy compared to fluorocarbon (FC) surfactants 11,13 and hydrocarbon (HC) tri-chain surfactants. 21 For the first time it is shown that single hydrocarbon (HC) chain LSEMs can be obtained.…”

Section: Discussionmentioning

confidence: 99%

Low-Surface Energy Surfactants with Branched Hydrocarbon Architectures

et al. 2014

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“…Sodium dodecyl sulphate solutions were diluted from a stock solution to provide a concentration range of 5 Â 10 À5 to 1 Â 10 À2 mol dm À3 ðMÞ. The critical micelle concentration (CMC) of SDS is 8 mM (Hernainz and Caro 2002;Sanchez-Camazano et al 2000). Aerosol-OT (AOT) solutions were similarly prepared from a stock solution to provide a concentration range from 5 Â 10 À5 to 5 Â 10 À3 M. The CMC of AOT is 2.5 mM (Li et al 1998).…”

Section: Batch Experimentsmentioning

confidence: 99%

Aqueous Solution of Anionic Surfactants Mixed with Soils Show a Synergistic Reduction in Surface Tension

Hagenhoff¹,

Dong²,

Chowdhry³

et al. 2009

Water Air Soil Pollut

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Water retention and transport in soils is dependent upon the surface tension of the aqueous phase. Surfactants present in aqueous solution reduce the surface tension of aqueous phase. In soil-water systems, this can result in water drainage and reductions in field capacity and hydraulic conductivity. In this investigation, the surface tension of surfactant solutions mixed with soil-in a constant fixed ratio-was measured as a function of surfactant concentration. Two anionic surfactants were used: sodium dodecyl sulphate and sodium bis (2-ethylhexyl) sulfosuccinate. Two soils were also used-a clay soil and a sandy soil. The key observation made by this investigation was that the addition of soil to the surfactant solution provided a further component of surface tension reduction. Neither soil sample reduced the surface tension of water when surfactant was absent from the aqueous phase, though both soils released soil organic matter at low surfactant concentrations as shown by measurement of the chemical oxygen demand of the supernatant solutions. Furthermore, both surfactants were shown to be weakly adsorbed by soil as shown by the use of a methylene blue assay. It is therefore proposed that the additional reduction in surface tension arises from synergistic interactions between the surfactants and dissolved soil organic matter.

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Variation of surface tension in aqueous solutions of sodium dodecyl sulfate in the flotation bath

Cited by 39 publications

References 15 publications

Investigation of SDS, DTAB and CTAB micelle microviscosities by electron spin resonance

Investigation of SDS, DTAB and CTAB micelle microviscosities by electron spin resonance

Low-Surface Energy Surfactants with Branched Hydrocarbon Architectures

Aqueous Solution of Anionic Surfactants Mixed with Soils Show a Synergistic Reduction in Surface Tension

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