𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A Thermometric Titration Study on the Micelle Formation of Sodium Decyl Sulfate in Water

✍ Scribed by Zoltán Király; Imre Dekány

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
79 KB
Volume
242
Category
Article
ISSN
0021-9797

No coin nor oath required. For personal study only.

✦ Synopsis

The critical micelle concentration (cmc) and the enthalpy of micelle formation ( mic H) of sodium n-decyl sulfate (SDeS) in aqueous solutions were determined in the temperature range 15-45 • C by isothermal titration microcalorimetry. An empirical sigmoidal expression providing high accuracy and internal consistency was used for the evaluation of the titration curves. As a function of increasing temperature, the cmc passes through a minimum at 29.5 • C, where mic H changes sign from positive to negative. The isosteric enthalpies calculated by means of the van't Hoff relation agree very well with the directly measured calorimetric enthalpies. The cmc, enthalpy, Gibbs energy, entropy, and heat capacity data of SDeS micellization are reported and compared with the results of previous studies on the same system. It was found that the presence of n-decanol, which appears to be a product of the natural hydrolysis of SDeS, significantly lowers the cmc. mic H is less appreciably influenced by this impurity.

📜 SIMILAR VOLUMES

Comparative Study on the Structure of Wa
Comparative Study on the Structure of Water in Reverse Micelles Stabilized with Sodium Bis(2-ethylhexyl) Sulfosuccinate or Sodium Bis(2-ethylhexyl) Phosphate in n-Heptane
✍ Quan Li; Tao Li; Jinguang Wu; Naifu Zhou 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 74 KB

The microstructure of water solubilized in H(2)O/surfactant/n-heptane ternary systems has been investigated by employing (1)H-NMR and FT-IR spectroscopic techniques. Two reverse micellar systems were prepared and studied, i.e., sodium bis(2-ethylhexyl) sulfosuccinate in n-heptane (H(2)O/AOT/n-heptan

Distribution of the methyl radical adduc
Distribution of the methyl radical adduct of N-benzylidene-1-diethoxyphosphoryl-1-methylethylamine N-oxide-type nitrones in water–sodium dodecyl sulfate micelles: an electron paramagnetic resonance spin trapping study
✍ Cécile Rizzi; Robert Lauricella; Jean-Claude Bouteiller; Valérie Roubaud; Béatri 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 144 KB

## Abstract The behavior of the methyl radical adduct of six β‐phosphorylated nitrones in the __N__‐benzylidene‐1‐diethoxyphosphoryl‐1‐methylethylamine N‐oxide series in the presence of sodium dodecyl sulfate (SDS) micelles was followed by electron paramagnetic resonance spectroscopy. Except when t

The Effect of Ternary Complex Formation
The Effect of Ternary Complex Formation on the Partitioning of Pyrene and Anthracene in Aqueous Solutions Containing Sodium Dodecyl Sulfate and M-γ-cyclodextrin
✍ J. Andreaus; J. Draxler; R. Marr; A. Hermetter 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 170 KB

They have lipophilic cavities with inner diameters of 0.45 The partitioning behavior of pyrene and anthracene between nto 0.95 nm and are known to form host -guest inclusion decane and aqueous solutions containing a partially methylated complexes with many different types of molecules ( 1, 2 ) . g-c

A Fourier Transform Infrared Study on th
A Fourier Transform Infrared Study on the Structure of Water Solubilized by Reverse Aggregates of Sodium and Magnesium Bis(2-ethylhexyl)sulfosuccinates in Organic Solvents
✍ Luzia P. Novaki; Omar A.El Seoud 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 240 KB

chemical and enzymatic reactions and preparation of poly-The structure of water (4% D 2 O in H 2 O, v/v) solubilized by mers and quasi-monodisperse inorganic particles (1-8). the reverse aggregates of sodium bis(2-ethylhexyl) sulfosuccinate It is important to understand fully the properties of water