Oil‐Induced Structural Change of Wormlike Micelles in Sugar Surfactant Systems

Wormlike micelles in mixed amino acid-based anionic/nonionic surfactant systems

“…They are practically important because of their peculiar properties and potential industrial applications, including food emulsion, cosmetics, paints, pharmaceuticals, adhesives, and many household products [8,11]. In one-dimensional micellar growth takes place forming a long flexible aggregate called a wormlike micelle [21][22][23][24][25][26][27]. Above some critical surfactant concentration, called the overlapping concentration, the wormlike micelles can entangle with each other to form a transient network, which in turn exhibits viscoelastic properties [28] and is very much similar to those observed in solutions of flexible polymers.…”

Wormlike micelles in poly(oxyethylene) surfactant solution: Growth control through hydrophilic-group size variation

“…Thus, these systems are very interesting from scientific and industrial standpoints. Therefore a large amount of research employing different materials and various techniques (such as rheology, cryo-TEM, light scattering, small-angle X-ray, and neutron scattering) has been carried out to characterize these systems [2,[5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. However, most of the past and recent work is focused on ionic surfactant systems [20][21][22][23][24][25].…”

Understanding viscosity reduction of a long-tail sulfobetaine viscoelastic surfactant by organic compounds

“…These organic compounds reduce the viscosity of the surfactant solutions by solubilizing in the core of cylindrical micelles. 5,6,8,[28][29][30] Solubilization disrupts the cylindrical micelle structure, changing longer cylindrical micelles into shorter cylindrical micelles, Kralchvesky and coworkers 31,32 determined the solubilization kinetics of non-polar oils in mixed cylindrical micelles of a nonionic surfactant and a triblock copolymer. The micelles adsorb on the oil-aqueous solution interface before solubilization takes place.…”

“…Zero-shear viscosity reduction by non-polar oils is linked to the solubilization of oil molecules in the micelle core. 7,8,29,30 The solubilization of the oil molecules in the micelle core disrupts the micelle structure, leading to structural changes and reducing the zero-shear viscosity of a surfactant solution. Because crude oil and EVOO did not induce drastic viscosity differences like n-decane at 30 C, these oils faced a barrier to solubilization in the micelle core.…”