Micelles elongated

Odi]k T 1996 Ordered phases of elongated micelles Curr. Opin. Colloid Interface Sol. 1 337-40... 

J. P. Bouchaud, A. Ott, D. Langevin, W. Urbach. Anomalous diffusion in elongated micelles and its Levy flight interpretation. J Phys II (Erance) 2 1465-1482, 1991. 

Odijk, T. "Ordered phases of elongated micelles". Curr. Opin. Colloid Interface Sci. 1,337-340 (1996). Olmsted, P.D."Perspectives on shear banding in complex uids". Reologica Acta 47, 283-300 (2008). 

At a concentration close to the CMC, the micelles are generally spherical or close to spherical (see Fig. 2). As the concentration is increased, the micelles may remain spheroidal or grow and become oblate (disk-like) or prolate (rod-like). The giant worm-like or thread-like micelles represent an extreme case of growth into elongated micelles. The worm-like micelles can be linear or branched (see Fig. 2). The hemispherical end caps of thread-like micelles have a larger diameter than the cylindrical body," a result correctly predicted by theory. Micelles can also be ring-like. " ... 

Fig. 6 Cryo-TEM micrographs show the shape of the aggregates in the course of the vesicle-to-micelle transformation in the MGO/CTAB mixture. (A) Coexistence of globular micelles, elongated micelles that are probably ribbon-like, and vesicles (lipid mole fraction 0.47). (B) Perforated vesicles (lipid mole fraction 0.64). Reproduced from Ref. [30] with permission of the American Chemical Society.

Elongated micelles may have a connected hydrocarbon (or water) interior. 

Kunieda and coworkers investigated diverse colloidal systems including spherical and elongated micelles, and liquid-crystalline systems on the basis of polymer or other amphiphilic molecules mixed with water [4, 10, 18, 23, 24]. 

Figure 9 (a) Molecular structure of the saies of facial amphiphilic dendrons. (b) These dendrons aggregate into elongated micelles... 

Fig, 3. (a) Surfactant-oil-water phase diagram (b) Surfactant-silica-water phase diagram simulation points are shown as follows (A) spherical micelles, (A) elongated micelles, (O) cylindrical micelles, ( ) bicontinuous phase, ( ) lamellar phase. Phase boundary lines are provided as a guide to the eye. 

SANS studies [51,75] of the dichained-diglucamide sugar surfactants [K] (Fig. 1) where C ,H2m+i substitutes CgHis showed that these surfactants form elongated micelles even at fairly low concentration for m = 5-7 and disklike micelles for w = 8. Temperature had little effect on the micelle size. 

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