Diblock copolymers are interesting objects of research, because they can combine different material properties in one molecule. All kinds of tailor-made new materials can be constructed if the physics of these types of molecules is understood.
One aspect of diblock copolymers is their tendency to separate on the microscale. If both diblocks differ enough in structure or polarity, microphase separation into micelles, tubes or lamellae can occur. If shear is applied, lamellae formation is favoured and experiments show three different orientations of the lamellae: the perpendicular, the transverse and the parallel state. We are developing and using mesoscale computer simulation methods to gain insight in the physics that cause the different lamellar states.
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