Block copolymers - Their microdomain formation (in solid state) and surfactant behaviour (in solution)

Block copolymers are linear macromolecules that consist of different blocks (often incompatible) of different types of monomers, The two or more distinct and incompatible moieties provide unique solid state and solution properties to block copolymers which in turn lead to various applications. The microphase separation in block copolymers gives rise to formation of different types (e,g, spherical, cylindrical, lamellar, etc.) of microdomains in the solid state. In addition to this, they show micellization and adsorption characteristics in suitable solvents. The present article reviews the properties of block copolymers in the solid and solution state with special reference to ethylene oxide-propylene oxide block copolymers in solution.