Modulating properties of aqueous sodium dodecyl sulfate by adding hydrophobic ionic liquid

Behera, Kamalakanta; Pandey, Siddharth

doi:10.1016/j.jcis.2007.07.072

Cited by 114 publications

(82 citation statements)

References 105 publications

(133 reference statements)

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“…Thermodynamic parameters of SDS micellization in cosolvent/water mixtures, at 298 promotes the release of Na + ions. 31 Besides, addition of the cosolvents decreases the solvent polarity, increasing the solubility of the surfactant monomers for decreasing the hydrophobic effect. This can explain the cmc increase at cosolvent concentrations above 0.80 mol%.…”

Section: Effects Of the Cosolvents On Sds And Dss Micellizationmentioning

confidence: 99%

Effect of Acetonitrile and N,N-Dimethylformamide on the Formation of Poly(ethylene oxide)-Sodium Alkyl Sulfate Aggregates

Ferreira

Silva

et al. 2017

J. Braz. Chem. Soc.

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The effects of low contents of acetonitrile (AN) or N,N-dimethylformamide (DMF) on the aggregation of sodium alkyl sulfate surfactants, in the absence and presence of poly(ethylene oxide) (PEO), were investigated using conductivity and isothermal titration calorimetry. The cosolvents slightly changed the critical micellar concentrations and did not alter the critical aggregation concentrations of the surfactants sodium decyl sulfate (DSS) and sodium dodecyl sulfate (SDS) with PEO. However, AN and DMF turned the micellization of the surfactants and their binding to the polymer enthalpically more favorable. For instance, for SDS, the micellization enthalpy, , decreased from close to 0 kJ mol -1 in water to −14.3 kJ mol -1 in the presence of 2.50 mol% AN, and the integral enthalpy change for aggregate formation with the polymer, ΔH agg (int), decreased from −1.1 kJ mol -1 in water to −15.5 kJ mol -1 in the same AN concentration. This was attributed to the modification of the solvation shells of both SDS and PEO by the cosolvent molecules, which reduced the entropic contribution to formation of the aggregates. Consequently, when SDS was replaced with DSS, the AN affected to a lesser extent, with a decrease of 9.1 kJ mol -1 , while the ΔH agg (int) values were not altered, highlighting the influence of hydrophobic interactions in the surfactant aggregation process.

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Section: Effects Of the Cosolvents On Sds And Dss Micellizationmentioning

confidence: 99%

Effect of Acetonitrile and N,N-Dimethylformamide on the Formation of Poly(ethylene oxide)-Sodium Alkyl Sulfate Aggregates

Ferreira

Silva

et al. 2017

J. Braz. Chem. Soc.

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“…20 The effect of BINOL on the micropolarity is shown in Table 1. With the increase of BINOL concentration, the intensity ratio of the first fluorescence peak to the third fluorescence peak of the pyrene (I 1 /I 3 ) decreased.…”

Section: Effect Of Binol On the Micropolarity And Microfluidity Of Lementioning

confidence: 99%

Interaction between (1,1′‐Binaphthalene)‐2,2′‐diol and Lecithin Liposome

Chen¹,

Gan²,

An³

et al. 2010

Chin. J. Chem.

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The interaction between (1,1'-binaphthalene)-2,2'-diol (BINOL) and lecithin liposome was studied by UV-Vis, fluorescence and 1 H NMR spectroscopies. BINOL can obviously associate with lecithin liposome and the preferential binding site of BINOL with lecithin liposome is located in the headgroup region. The hydrogen bond and electrostatic interaction should exist in BINOL/liposome system, which restricts intra-annular rotation of naphthol moieties. Therefore, the fluorescence intensity of BINOL increases when a small quantity of liposome is added into the system. The partition coefficient K D between the lecithin liposome and the aqueous phase is 310.9. With the increase of BINOL concentration, the micropolarity (I 1 /I 3 ) and membrane fluidity of liposome decreased, while the viscosity of membrane increased.

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“…The two fitted lines meet in the curve at the particular point. That point of intersection is known as cmc of the solution.The effective factors, such as the addition of electrolytes, buffer pH, temperature, addition of organic modifiers, ionic strength of the aqueous solution, and presence of additives can change the cmc value from that determined in pure water [8][9][10]. Addition of electrolyte in the surfactant solution decreases the cmc value [11].…”

Section: Introductionmentioning

confidence: 99%

Micellization Behavior of Cetyltrimethylammonium bromide in Presence and Absence of Na2SO4 and MgSO4 in Aqueous media

2016

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Viscosity and surface tension measurements of cetyltrimethylammonium bromide (CTAB) in presence and absence of Na 2 SO 4 and MgSO 4 in aqueous media are reported. The results showed an increase in viscosity with increase in concentration of cetyltrimethylammonium bromide in presence and absence of salts where as the decrease in surface tension with increase in concentration of cetyltrimethylammonium bromide in presence and absence of salts. The viscosity of CTAB was observed lowest in pure water and increases in presence of MgSO 4 and then more increases in presence of Na 2 SO 4 where as the surface tension of CTAB was observed highest in pure water and decreases in presence of Na 2 SO 4 and then more decreases in presence of MgSO 4 .The critical micelle concentration (cmc) of CTAB decreases in presence of salts in both viscosity and surface tension measurements. The decreasing cmc of CTAB are found to be more in the presence of Na 2 SO 4 in comparison with the presence of MgSO 4 for both measurements. The graphs of viscosity versus log[C] and the surface tension versus log[C] are used in determining the critical micelle concentration (cmc).

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Modulating properties of aqueous sodium dodecyl sulfate by adding hydrophobic ionic liquid

Cited by 114 publications

References 105 publications

Effect of Acetonitrile and N,N-Dimethylformamide on the Formation of Poly(ethylene oxide)-Sodium Alkyl Sulfate Aggregates

Effect of Acetonitrile and N,N-Dimethylformamide on the Formation of Poly(ethylene oxide)-Sodium Alkyl Sulfate Aggregates

Interaction between (1,1′‐Binaphthalene)‐2,2′‐diol and Lecithin Liposome

Micellization Behavior of Cetyltrimethylammonium bromide in Presence and Absence of Na2SO4 and MgSO4 in Aqueous media

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