We will exploit the unique capability of Nimrod in the study of the structural transformation of a diblock copolymer from the disordered randomly mixed phase to the ordered lamellar structure. We focus on two diblock copolymers; one in which the two blocks will locally form disordered amorphous structures and the other in which one block has the capability to crystallise. In such systems there will be the nanoscale phase separation of the two blocks which gives rise to characteristic low Q signals as well as any changes in the local structure within each lamellae. We will use the extended Q range available with Nimrod to obtain neutron scattering data which follows the solid state transformation from the unordered state to the ordered lamellar phase to identify any coupling of the local structure with the large scale segregation.