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Worm –like micelles in water solutions of 1, 4 poly(1, 3 butadiene)-polyethilene oxide Diblock copolymer.

Amphiphiles contain two or more chemically dissimilar units that are covalently joined to form a rather small molecule or a macromolecule. The incompatibility between their molecular segments leads to local segregation and to the formation of self-assembled structures. This propensity is clear in solution, where the solvent could be selective: good for one molecular unit but poor for the other. Typical amphiphiles are surfactants, lipids, and diblock copolymers. Diblock copolymers are important materials for creating self-assembled structures. Here, segregation of the different polymer blocks yields molecular-scale aggregates of nanometric size, with great potential applications in nanostructured plastics, and in solution as nano- to micro-sized carriers for active compounds, e. g. pharmaceuticals, for the controlled release of encapsulated compounds, just to mention a couple among numerous applications.

wormlike micelles; diblock copolymer; selforganisation

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