Polymeric Micelles and their Properties

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nanotechnology journalPolymeric micelles are characterized by a robust core-shell structure. Diblock copolymers have been known to self-assemble into dynamic micellar structures, with a hydrophilic shell (representing one block) and a hydrophobic core (representing the other block). Similarly, tri or multiblock copolymers with a poly(ethylene oxide)- poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) have been known to self-assemble into micelles with the polyethylene oxide (PEO) portion representing the hydrophilic shell and polypropylene oxide (PPO) portion representing the hydrophobic core. These micelles are very dynamic in their assembly and are generally formed in water above a certain concentration, which is also known as the critical micellar concentration (CMC).

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