Is water critical to the formation of micelles in apolar media??

Eicke, Hans‐Friedrich; Christen, H.

doi:10.1002/hlca.19780610631

Cited by 140 publications

(89 citation statements)

References 12 publications

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“…These aggregates do not correspond to a simple progressive aggregation. In the presence of a small amount of water they present a well-defined preferential aggregation number that minimizes the free energy [10], but the situation is not exactly similar to microemulsions [13]. No free water as a bulk liquid can be detected: thus, in the organic phase, most of the cases contain aggregates similar to reverse micelles in equilibrium with excess monomers.…”

Section: Introductionmentioning

confidence: 96%

Effect of long-range interactions on ion equilibria in liquid–liquid extraction

Dufrêche

Zemb

2015

Chemical Physics Letters

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Section: Introductionmentioning

confidence: 96%

Effect of long-range interactions on ion equilibria in liquid–liquid extraction

Dufrêche

Zemb

2015

Chemical Physics Letters

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“…It is also interesting to note that DGD forms reverse micelles or swollen micelles in heptane with certain amounts of solubillzed water, termed microemulsion, which is considered thermodynamically stable. Although extensive studies on the formation and nature of molecular aggregation in apolar media with AOT as one component, have been carried out by Eicke and his collaborators [1] including the importance of the role of water in forming various structures [2,3], not much attention has been paid so far to the formation of molecular aggregation in DGD/heptane/ water ternary system.…”

Section: Introductionmentioning

confidence: 99%

Molecular aggregation in the ternary system deca glycerol dioleate/heptane/water

Mandal

Nair

Ramaswamy

1988

Colloid & Polymer Sci

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The phase diagram for the ternary system deca glycerol dioleate(DGD)/heptane/water was established at 25 ~ In this phase diagram it was seen that the reverse micellar solution phase extends in its area until the water content reaches 35-45 wt %, at which a liquid crystalline phase begins to appear. On the basis of the experimental results of specific conductivity, viscosity, etc. for the samples containing a defmke amount of DGD (0,1 M), and varying relative amounts of heptane and water, the mechanism of the transition of reverse micellar structures to liquid crystalline phase is discussed.

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“…At very small water concentrations, PEO chains are linked together by hydrogen bonds with water acting as a "gluing" agent [60]. The large aggregate size does not change as the temperature is varied from 0 to 50 OC.…”

Section: Peo Block and Graft Copolymersmentioning

confidence: 99%

Radical Polymerization of Polyoxyethylene Macromonomers in Disperse Systems

Capek

1999

Radical Polymerisation Polyelectrolytes

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Dedicated to Professor J. BartoA (Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 842 36 Bratislava, Slovakia) on the occasion of his retirement and 65th birthday.Polymerization in disperse systems is a technique which allows one to prepare ultrafine and microsize latex particles, as well, and random, comb-like, comb-like, star-like, and graft copolymers. This article presents a review of the current literature in the field of the surfactant-free dispersion or emulsifier-free emulsion polymerization and copolymerization of the polyoxyethylene unsaturated macromonomers. The key factor for the preparation of polymer dispersion is the type of emulsifier and its concentration. When conventional surfactants are used, the high amount of stabilizer is needed to prepare a fine polymer dispersion. Conventional surfactants are held on the particle surface by the physical factors. An interesting alternative arises with the use of reactive surfactants which contain a polymerizable group. The reactive surfactants are incorporated into the polymer matrix or the particle surface layer which prevents them from subsequent migration. Together with a short introduction into some kinetic aspects of radical polymerization of traditional monomers in dispersion, emulsion, miniemulsion and microemulsion, we focus mainly on the organized aggregation of amphiphilic polyoxyethylene macromonomers and radical copolymerization of polyoxyethylene macromonomers with styrene and alkyl (meth)acrylates. We discuss mechanisms of particle growth, particle nucleation, the growth and termination polymer chains, and colloidal stability. Effects of initiator, macromonomer, diluent, continuous phase type and concentration of initiator, macromonomer and additives, the surface activity of macromonomer, the type of organized association of macromonomer or graft copolymer molecules on the polymerization and particle size are evaluated. Variation of molecular weight with the reaction conditions is also discussed.

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Is water critical to the formation of micelles in apolar media??

Cited by 140 publications

References 12 publications

Effect of long-range interactions on ion equilibria in liquid–liquid extraction

Effect of long-range interactions on ion equilibria in liquid–liquid extraction

Molecular aggregation in the ternary system deca glycerol dioleate/heptane/water

Radical Polymerization of Polyoxyethylene Macromonomers in Disperse Systems

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