Micelles

Several surfactant amphipathic lipid molecules scattered in a liquid to create a colloidal suspension make up a micelle (also known as associated colloidal system). With the hydrophilic "head" areas in contact with the surrounding solvent and the hydrophobic single-tail sections encapsulated in the micelle centre, a typical micelle in water forms an aggregate. This phase results from the bilayer's single-tail lipids' packing tendency. The micelle forms as a result of the difficulty in filling a bilayer's interior while accommodating the area per head group that the hydration of the lipid head group forces on the molecule. The term "normal-phase micelle" refers to this kind of micelle. The head groups of inverse micelles are in the center, and their tails extend outward. Micelles have a shape that resembles a sphere. It is also possible for phases to take the forms of ellipsoids, cylinders, and bilayers. The molecular geometry of the molecules that make up a micelle's surfactant and factors affecting the solution, such as surfactant concentration, temperature, pH, and ionic strength, influence the micelle's shape and size. According to their polymorphism, many lipids exhibit the micellization process, which results in micelles, as a component of their phase behavior.