Effect of the Nature of the Counterion on the Properties of Anionic Surfactants. 4. Characterizing Micelles of Tetraalkylammonium Dodecyl Sulfate as Reaction Media

2005 ◽  
Vol 109 (16) ◽  
pp. 7987-7997 ◽  
Author(s):  
Barney L. Bales ◽  
Mohamed Benrraou ◽  
Kaba Tiguida ◽  
Raoul Zana
Keyword(s):  
Anionic Surfactants ◽  
Dodecyl Sulfate ◽  
Reaction Media

scholarly journals Structural-rheological properties of systems based on polymeric hydrogels and anionic surfactants

2020 ◽  
Vol 64 (5) ◽  
pp. 551-557
Author(s):  
S. V. Bucha ◽  
Yu. V. Lipai ◽  
P. D. Vorobiev ◽  
D. V. Cherednichenko ◽  
A. D. Vorobiov ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Rheological Properties ◽  
Sodium Oleate ◽  
Polyacrylic Acid ◽  
Anionic Surfactants ◽  
Sodium Dodecyl ◽  
Dodecyl Sulfate ◽  
Polymeric Hydrogels ◽  
The Individual ◽  
Increasing Temperature

The effect of sodium dodecyl sulfate and sodium oleate on the structural-rheological properties of a dispersed hydrogel based on polyacrylic acid was studied. It was shown that the viscosity of hydrogel compositions with surfactants is higher than the viscosity of the individual components and increases with increasing temperature from 20 to 40 °C. Compositions with sodium oleate are non-Newton liquids and exhibit thixotropic properties.

Microextraction-colorimetric determination of anionic surfactants in natural and waste waters

2020 ◽  
Vol 86 (12) ◽  
pp. 5-14
Author(s):  
V. G. Amelin ◽  
Zen Alabden C. Shogah ◽  
D. S. Bolshakov
Keyword(s):  
Methylene Blue ◽  
Sodium Dodecyl Sulfate ◽  
Anionic Surfactants ◽  
Sodium Dodecyl ◽  
Colorimetric Method ◽  
Analytical Signal ◽  
Colorimetric Determination ◽  
Waste Waters ◽  
Relative Standard ◽  
Dodecyl Sulfate

An eco-friendly, simple, rapid and cheap method for determining anionic surfactants in natural and waste waters by microextraction-colorimetric method has been developed. The essence of the proposed approach consisted in extraction and concentration of analytes in an acidic medium in the form of associates with organic reagents (methylene blue and acridine yellow) by dispersion liquid-liquid microextraction using a mixture of chloroform-acetonitrile as an extracting and dispersing solvent, followed by aggregation of extractant microparticles by centrifugation and subsequent measurements of color characteristics using a smartphone. The values of the basic components of the RGB colorimetric system were used as an analytical signal to calculate the final color: The selection of optimal conditions for microextraction concentration of anionic surfactants from natural waters (the nature of the extracting and dispergating solvents, the volume of the dispergating solvent) was performed for the sodium dodecyl sulfate — methylene blue system. To study the colorimetric characteristics of the prepared extracts, a smartphone «iPhone X» was used as a color-registering device equipped with a specialized software product «RGBer». To minimize the measurement error by fixing the distance to the object under study and lighting conditions, we propose an installation that increases the accuracy and sensitivity of the determination and makes the method more mobile. The total content of the most common components of detergents was determined: sodium dodecyl sulfate, sulfonol, laureth sulfate and disodium laureth-3-sulfosuccinate. The detection limits ranged within 0.01 – 0.02 and 0.05 mg/liter. The range of detectable contents for all analytes was 0.05 – 1.0 mg/liter. For the determined surfactants, the equations of the relationship between the analytical signal and the concentration were obtained. The calibration graphs are linear with coefficients of the approximation reliability ≤0.98. The correctness of the method was tested on samples of natural water using the spike test procedure. The relative standard deviation of the analysis results does not exceed 0.13. The analysis duration is 20 – 30 min.

Spectrophotometric studies on surfactants. I. Interactions between cationic and anionic surfactants

1967 ◽  
Vol 45 (22) ◽  
pp. 2821-2827 ◽  
Author(s):  
R. V. Scowen ◽  
J. Leja
Keyword(s):  
Aqueous Solutions ◽  
Cationic Surfactants ◽  
Mixed Micelles ◽  
Anionic Surfactants ◽  
Ultraviolet Spectra ◽  
Dodecyl Sulfate ◽  
Cationic And Anionic Surfactants

Interactions taking place in aqueous solutions when cationic surfactants, alkyl trimethyl ammonium bromides (CnTABs, dodecyl or octadecyl), are added to solutions of anionic surfactants, like alkyl dithiocarbonates (xanthates, hexyl or nonyl) and dodecyl sulfate or laurate ions, result either in the formation of 1:1 complexes or in mixed micelles. Infrared and ultraviolet spectra show that complexes are largely ionic, with some perturbations of bonds in anions and a limited hydrolysis in the case of laurate ions.

Utility of dodecyl sulfate surfactants as dissolution inhibitors in chemical mechanical planarization of copper

2005 ◽  
Vol 20 (12) ◽  
pp. 3413-3424 ◽  
Author(s):  
Y. Hong ◽  
U.B. Patri ◽  
S. Ramakrishnan ◽  
D. Roy ◽  
S.V. Babu
Keyword(s):  
Material Removal ◽  
Anionic Surfactants ◽  
Chemical Mechanical Planarization ◽  
Sodium Dodecyl ◽  
Contact Angles ◽  
Open Circuit ◽  
Environmentally Benign ◽  
Chemical Dissolution ◽  
Dodecyl Sulfate ◽  
Cu Cmp

An important component of the slurries used in chemical mechanical planarization (CMP) is an appropriately chosen corrosion/dissolution inhibitor, which facilitates selective material removal from protrusions while protecting recessed regions of the surface. The present work demonstrates the utility of two environmentally benign anionic surfactants, sodium dodecyl sulfate (SDS) and ammonium dodecyl sulfate (ADS) as dissolution inhibitors. Using a standard slurry (1 wt% glycine with 5 wt% H2O2 at pH = 4.0) typically used for Cu CMP and combining measurements of open circuit potentials and contact angles with those of Cu removal rates, we show that both SDS and ADS suppress chemical dissolution and polish rates of Cu. The dissolution inhibition efficiencies of ADS and SDS measured in these experiments are found to be superior to those of benzotriazole (BTA), a traditional inhibiting agent used for copper CMP.

Solubilization of Ni Imidazole Complex in Micellar Media of Anionic Surfactants, Sodium Dodecyl Sulfate and Sodium Stearate

2017 ◽  
Vol 20 (6) ◽  
pp. 1311-1320 ◽  
Author(s):  
Nafisa Younas ◽  
Muhammad Abid Rashid ◽  
Muhammad Usman ◽  
Sadia Nazir ◽  
Sadia Noor ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Anionic Surfactants ◽  
Sodium Dodecyl ◽  
Sodium Stearate ◽  
Micellar Media ◽  
Dodecyl Sulfate
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