Mechanistic approach on heat induced growth of anionic surfactants: a clouding phenomenon

RSC Advances ◽  
2015 ◽  
Vol 5 (30) ◽  
pp. 23778-23786 ◽  
Author(s):  
Arti Bhadoria ◽  
Sugam Kumar ◽  
Vinod K. Aswal ◽  
Sanjeev Kumar
Keyword(s):  
Anionic Surfactants ◽  
Attractive Interaction ◽  
Mechanistic Approach ◽  
Micellar Growth ◽  
Clouding Phenomenon

Clouding behaviour of aqueous anionic surfactants have been studied. Data reveal that the onset of attractive interaction on heating is responsible for micellar growth and the unusual clouding.

Nonionic Micelles near the Critical Point:  Micellar Growth and Attractive Interaction†

Langmuir ◽  
2000 ◽  
Vol 16 (23) ◽  
pp. 8692-8701 ◽  
Author(s):  
Otto Glatter ◽  
Gerhard Fritz ◽  
Helmut Lindner ◽  
Judith Brunner-Popela ◽  
Rainer Mittelbach ◽  
...  
Keyword(s):  
Critical Point ◽  
Attractive Interaction ◽  
Micellar Growth

Phase behavior of cationic and anionic surfactants at low concentrations

1992 ◽  
Vol 50 (1) ◽  
pp. 694-695
Author(s):  
E. Naranjo
Keyword(s):  
Phase Behavior ◽  
Structural Characterization ◽  
Dynamic Systems ◽  
Anionic Surfactants ◽  
Intermolecular Forces ◽  
Stable Form ◽  
Surfactant Mixtures ◽  
Low Concentrations ◽  
Cationic And Anionic Surfactants ◽  
General Method

Equilibrium vesicles, those which are the stable form of aggregation and form spontaneously on mixing surfactant with water, have never been demonstrated in single component bilayers and only rarely in lipid or surfactant mixtures. Designing a simple and general method for producing spontaneous and stable vesicles depends on a better understanding of the thermodynamics of aggregation, the interplay of intermolecular forces in surfactants, and an efficient way of doing structural characterization in dynamic systems.

Mechanistic Study and Development of Catalytic Reactions of Sm(II)

2018 ◽  
Author(s):  
Sandepan Maity ◽  
Robert Flowers
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Proton Donor ◽  
Catalytic Reactions ◽  
Mechanistic Study ◽  
Mechanistic Studies ◽  
Cyclization Reactions ◽  
Mechanistic Approach ◽  
Donor Source

Despite the broad utility and application of SmI<sub>2</sub>in synthesis, the reagent is used in stoichiometric amounts and has a high molecular weight, resulting in a large amount of material being used for reactions requiring one or more equivalents of electrons. We report mechanistic studies on catalytic reactions of Sm(II) employing a terminal magnesium reductant and trimethyl silyl chloride in concert with a non-coordinating proton donor source. Reactions using this approach permitted reductions with as little as 1 mol% Sm. The mechanistic approach enabled catalysis employing HMPA as a ligand, facilitating the development of catalytic Sm(II) 5-<i>exo</i>-<i>trig </i>ketyl olefin cyclization reactions.

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