Micellar behaviour in paraffin-chain salt solutions.

  • 3.91 MB
  • English
The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL19420563M

Solubilization behavior of sodium dodecylpolyoxyethylene sulfates in relation to their polyoxyethylene chain lengths. The Journal of Physical Chemistry72 (4), DOI: /ja Robert D. Allendoerfer, Griffith Smith, Robert I.

by: The micellar molecular weights of four normal paraffin chain salts in dilute aqueous solution have been revised to give the values: dodecyltrimethylammonium bromide, ; sodium decyl sulfate, ; sodium dodecanesulfonate, ; sodium dodecyl sulfate, A reference model of a spherical micelle has been by: Early views on micelle structure and thermodynamics were developed by Hartley, (2) who investigated the properties of aqueous solutions of paraffin chain salts nearly 50 years ago.

Using a variety of physical chemical techniques, including diffusion methods, Hartley proposed that micelles in dilute solution had a spherical structure in which Cited by: The aggregation behavior of micelles may be influenced by temperature variations during the displacing process.

Thus, the influence of temperature on the micellar aggregation behavior of aqueous AMS solutions was examined in the range of 20–70 °C.

The obtained results are depicted in Figure 6. This demonstrates a trend of consistent Author: Huoxin Luan, Lingyan Gong, Xinjian Yue, Xiaobin Nie, Quansheng Chen, Dan Guan, Tingli Que, Guangzhi.

Behavior of wormlike micellar solutions formed without any additives from semi-fluorinated quaternary ammonium salts† Gennifer Padoan, ab Elisabeth Taffin de Givenchy, a Alessandro Zaggia, b Sonia Amigoni, a Thierry Darmanin, a Lino Conte b and Frédéric Guittard * a.

Micellar Solubilization of Fatty Acids and Monoglycerides by Bile Salt Solutions ALAN F. HOFMANN 1 Nature volumepages – () Cite this articleCited by: Some functionalised dipeptides can form hydrogels when salts are added to solutions at high pH. We have used surface tension, conductivity, rheology, optical, confocal and scanning electron microscopy, 1 H NMR and UV-Vis spectroscopy measurements to characterise fully the phase behaviour of solutions of one specific gelator, 2NapFF, at 25 °C at pH Cited by: The CMC of aqueous solutions of paraffin chain salts regarded as a function of the thickness of the ionic atmosphere.

Journal of Colloid Science17 (3), DOI: /(62) Micellar behaviour in paraffin-chain salt solutions. book Isemura, Fumikatsu Tokiwa, Shoichi by: Specific conductivities of aqueous solutions of sodium dodecyl sulphate, sodium decyl sulphate, and sodium octyl sulphate were measured over concentration ranges about the respective CMCs and at temperatures from 10° to 55 °C.

Values of the increase in heat content associated with micelle Cited by:   Injection of the micellar fluid began in the Hegberg pattern on Ma The micellar fluid contained sulfonates, crude oil, one cosurfactant, and an aqueous salt solution.

Details Micellar behaviour in paraffin-chain salt solutions. FB2

The micellar fluid was injected in alternate slugs, called micellar water and micellar oil (soluble oil). Polymer solution followed the injection of micellar fluids. This and its companion Volumes 5 and 6 document the proceedings of the 5th International Symposium on Surfactants in Solution held in Bordeaux, France, JulyThis symposium was the continuation of the series of symposia initiated in in Albany, New York under the title "Micellization, Solubilization and Microemulsions".

It is considered that the hydrophobia association of hydrophobically associating polymers in aqueous solutions proceeds in two stages: the intra- and intermolecular associations. Prediction of the shape of self-assembled structures in solution Common surfactants: v 0/l 0 = const.

Description Micellar behaviour in paraffin-chain salt solutions. EPUB

= nm2 (single tail) • Only the headgroup controls the equilibrium aggregate structure via the headgroup area a e • The tail does not have any influence on the shape and size of the aggregate.

Abstract: An attempt has made to study the influence of NaCl on the micellar behaviour of some cationic surfactants by conductivity measurements.

With increase in concentration of salt, the critical micelle concentration (CMC) of cetyltrimethylammoniumbromide (CTABr) decreases. For example, the CMCs ofCited by: 1. ever, a large amount of inorganic salt may induce changes in the solution properties through their in-fluence on the properties of water.

For a micellar solution, the temperature at which the isotropic solution breaks up into two phases is known as the cloud point (Warr et al., ). In fact, it is well known that salts added at rather high con.

Download Micellar behaviour in paraffin-chain salt solutions. FB2

Micellization, Solubilization, and Microemulsions, K. Mittal Volume 1 of Micellization, Solubilization, and Microemulsions: Proceedings of the International Symposium on Micellization, Solubilization, and Microemulsions: Held at the Seventh Northeast Regional Meeting of the American Chemical Society in Albany, New York, August the copolymer in salt-containing solutions follow the same pattern as the salt-free system, the temperatures for cloud points, micellar sphere-to-rod transition, and gel formation are shifted with the salt addition.

The cloud point shifts are in good agreement with previous measurements by Bahadur and [email protected] et al. ~!#.Cited by: COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

This and its companion Volume 2 comprise the proceedings of the International Symposium on "Solution Behavior of Surfactants - Theoretical and Applied Aspects" organized under the auspices of the 11th Northeast Regional Meeting of the American Chemical Soci­ ety held in Potsdam, N.

Y., June. This and its companion Volumes 5 and 6 document the proceedings of the 5th International Symposium on Surfactants in Solution held in Bordeaux, France, JulyThis symposium was the continuation of the series of symposia initiated in in Albany, New York under the titleBrand: Springer US.

Abstract. The absorption of cholesterol has been studied in man by perfusing the upper jejunum with a micellar solution of bile salt, 1-monoglyceride, and cholesterol C, with a triple lumen tube with collection sites 50 cm absorption of micellar components between the collection sites was calculated from their concentration changes relative to those of the watersoluble marker Cited by:   In response to intensifying interest on surfactant research brought on by recent innovation, Structure-Performance Relationships in Surfactants, Second Edition examines novel developments in our understanding of the properties and performance of surfactants at air-liquid, liquid-liquid, and solid-liquid interfaces, highlighting seven new chapters and carefully updated material to.

The present method was based on the effect of bile salt (Sodium cholate and Sodium deoxy cholate) on the dissolution of Antidepressant drug like Imipramine.

Sodium cholate and Sodium deoxycholate is a type of anionic surfactants form mixed micelle with Imipramine and influence its rate of dissolution. The micellization behavior of binary anionic bile salt surfactant mixtures was investigated Author: Shweta Singh, Santosh K. Sar, Tonmoy Ray.

Micellar surfactant solutions are characterized by a distribution of aggregates made up predominantly of premicellar aggregates (monomers, dimers, trimers, etc.) and a region of proper micelles close to the peak aggregation number, connected by an intermediate region containing a Cited by: 4 CHAPTER 1.

RHEOLOGY OF GIANT MICELLES range from somewhat below, to well above, the overlap threshold. This is the region where viscoelastic (but isotropic) solutions are observed. This regime merits detailed attention for two reasons. The first is that micellar viscoelasticity forms the basis of many applications.

The transitions from unimer to micellar solution and from micellar solution to BCC micellar crystal occurred some 20 °C lower in 1 M NaCl than in the salt-free system. Salt also induced a region of liquid–liquid coexistence in the phase diagram at F68 concentrations wt%, with the lower critical solution temperature (or critical point.

Brian Duncan Flockhart has written: 'Properties of emulsifying agents in mixed solutions' 'Micellar behaviour in paraffin-chain salt solutions' Asked in Inventions, Century - s.

@article{osti_, title = {Surfactant solutions new methods of investigations}, author = {Zana, R}, abstractNote = {This book reviews methods for assessing surfactant-containing systems and presents literature on the effective analysis of micellar solutions, solubilized systems, and microemulsions.

Topics covered are as follows: thermodynamic methods; X-ray and neutron scattering; light. The micellar solution is prepared by dissolving the surfactant in the buffer solution in a concentration above its CMC.

Popular buffer solutions often used to prepare the micellar solution are phosphate, borate, or tris (hydroxymethyl) aminomethane (Tris).

Concentrations between 25 and mM are normally employed for both the surfactant and Cited by: Let C be the concentration of paraffin-chain salt in g/ml, Co the eme In g/ml and NA Avogadro's number. where M4 is the micellar weight, For))4 we substitute))eM 4 (ov) VN A where Vc= oe P, T This substitution is valid since in the range of concentration studied V may be considered a constant in the differentiation of C.

In water, bile salts form small aggregates called micelles. The behavior of bile salt micelles is quite different from micelles formed by detergents. Bile salt micelles are smaller, more highly charged and of different structure than detergent micelles.

Bile salts form mixed micelles with a variety of other soluble and insoluble lipidic by: Effect of Antifoaming Agents on the Micellar Stability and Foamability of Sodium Dodecyl Sulfate Solutions B. K. Jha, A. Patist, and D. O. Shah* Center for Surface Science & Engineering, Departments of Chemical Engineering and Anesthesiology, University of Florida, Gainesville, Florida Received Octo In Final Form: March 1, File Size: 61KB.Marked changes in foaming behavior, as well as changes in electrical conductivity, surface tension, turbidity and uptake of organic dyes, occur in bulk solution above the CMC, but the molecular concentration of the surfactant in the water remains constant, with the surplus molecules forming additional micelles.