The aggregation behavior of sodium dioctylsulfosuccinate (AOT) in aqueous media containing tetraalkylammonium bromide (TAAB, where alkyl = ethyl (TEAB), propyl (TPAB) and butyl (TBAB)) was studied by surface tension, fluorescence (with pyrene as the probe), small-angle neutron scattering (SANS) dynamic light (DLS) measurements. A comparison critical micelle concentration (cmc) values AOT presence salts showed order TBAB < TPAB TEAB NH4Cl NaCl. Synergism cmc occurs when solution contains a...

Electrical conductivities of sodium dodecyl sulfate (SDS) in aqueous acetate (NaAc) and propionate (NaPr) solutions different concentrations were measured at 25 °C. An anomalous behavior the form minima plots critical micelle concentration (cmc) SDS versus NaAc NaPr was observed, thereby indicating effect co-ions on micellization. The conductivity data analyzed using a equation derived basis mixed-electrolyte model for surfactant wherein ion−ion interactions accounted by Debye−Hückel−Onsager...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConcentration dependence of viscosity aqueous electrolytes. A probe into the higher concentrationS. Mahiuddin and K. IsmailCite this: J. Phys. Chem. 1983, 87, 25, 5241–5244Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 1983https://pubs.acs.org/doi/10.1021/j150643a036https://doi.org/10.1021/j150643a036research-articleACS PublicationsRequest reuse permissionsArticle...

Sodium dioctylsulfosuccinate (AOT) micelle has a special counterion binding behavior in aqueous electrolyte medium, viz., the constant (β) abruptly increases by 2-fold at about 0.015 mol dm−3 NaCl concentration (c*), but not sodium salicylate (NaSa) solution. Since counterions affect structure and performance of ionic surfactants, ascertaining cause for sudden shift β value AOT is fundamental importance. In this study been ascertained 40 °C carrying out surface tension, zeta potential,...

The dependence of critical micelle concentration (cmc) sodium dioctylsulfosuccinate (AOT) on the amount ethylene glycol (EG) in water + EG medium was reported to be unusual and different from that other surfactants extent cmc AOT is lower than water. It yet understood why behaves so medium, although known have some special properties. Hence present study range 0 100% (by weight) measured by using surface tension fluorescence emission methods. In contrast what reported, this revealed with...

The influence of mixing protocol, composition, temperature, ageing and added alcohols on the characteristics microstructures sodium dodecylsulfate (SDS) + cetyltrimethylammonium bromide (CTAB) mixtures has been investigated in this paper. In catanionic mixture (1 weight% total surfactant content) temperature induced microstructural transition occurs, which is (i) a micelle-to-vesicle (MVT) if αSDS (mole fraction SDS) = 0.7, 0.8 or 0.9 (ii) vesicle-to-micelle (VMT) 0.1, 0.2 0.3. specific...

Abstract Mixtures of sodium dioctylsulfosuccinate (AOT) and dodecylsulfate (SDS) that were studied in water at 25 °C by using surface tension, conductance, emf fluorescence emission methods exhibit synergism the region where mole fraction AOT bulk solution ( α 1 ) is less than 0.7 ideality ≥ 0.7. The molal conductance versus concentration behavior an aqueous found to be different from other ionic surfactants with exception bile salts. Composition mixed micelle was evaluated discussed...

Adsorbed sodium salicylate (NaSal) and deoxycholate (NaDC) retard the thermal denaturation of bovine serum albumin.

The present work was aimed at preparing composite materials using epoxy matrix and murta fibers of varying lengths weight percentages. composites were analyzed on the basis density, thermal gravimetric analysis, infrared spectroscopy, scanning electron microscopy, tensile strength, flexural Izod impact Rockwell hardness studies. Twenty-five percent randomly oriented 25 mm length rendered best mechanical properties to composite. strength Hirsch model. characterization reveals that fiber is a...

Densities and viscosities of aqueous magnesium nitrate solutions are measured as functions temperature composition. The dependence viscosity is described by the Vogel–Tammann–Fulcher (VTF) equation. By accounting quantitatively for concentration dependences all three parameters involved in VTF equation an improved isothermal obtained, it describes satisfactorily viscosity.

Abstract The critical micelle concentrations (CMC) of cetylpyridinium chloride (CPC) in water/glycerol media and the presence sodium were determined at 25 °C by surface tension conductance methods. Variation CMC follows normal trend, i.e., it increases with glycerol content decreases on adding NaCl. Empirical analysis exponential increase CPC weight per cent is indicative having two components; one component being dependent while other independent amount. counter ion binding constant was...

The role of PEG's different molecular weights on the self-assembly SDS and added NaCl has been addressed opening new scopes for further studies.