Effects of temperature and shear conditions on lamellar-to-onion transition in nonionic surfactant/water systems

Removal of Pollutants by Ferrihydrite Nanoparticles Combined with Brij L4 Self-Assembled Nanostructures

“…The solutions first become very turbid and then phase separate into two micellar solutions with quite different surfactant contents above the cloud curve. The position of the critical point depends on the overall chain length of the amphiphile and the hydrophilic–lipophilic balance. , In C 12 E m surfactants with m between 3 and 6, a lamellar phase occurs over a wide concentration and temperature range. , The C 12 E m lamellar phase has a relatively low bending rigidity and undergoes a morphological transition to multilamellar vesicles under a constant shear rate. − The lamellar-to-multilamellar vesicle transition produces rheopexy, e.g., an increase in the viscosity as a function of time. , The C 12 E 4 /water binary phase diagram has been widely investigated − along with such pseudo-binary systems. , However, there has not been much investigation of the commercial surfactant Brij L4, which has a distribution of m with a mean of 4.2. , …”

“…31,32 However, there has not been much investigation of the commercial surfactant Brij L4, which has a distribution of m with a mean of 4.2. 33,34 Interactions between self-assembled nanostructures of surfactants and inorganic nanoparticles (NPs) are of interest for both natural and engineered systems. 35−38 Ag NPs are widely used in consumer products 39−41 due to their antibacterial properties, although their environmental fate, metal release mechanisms, and the chemical state of the released Ag are far from defined.…”