Abstract
This chapter presents a simple method to orient auto-assembling systems. It focuses on the production process of oriented nanostructured polymer films by shearing a concentrated solution of block copolymers. The most appropriate tool to simulate the applied strains during the film formation is a rheometer with cone-plate geometry. The technique of small angle X-ray scattering (SAXS) on the high brilliance beamline ID02 of the European Synchrotron Radiation Facility (ESRF) is used to analyze in situ the structure at large scale. By coupling online rheology with SAXS (Rheo-SAXS), the structure and its stability associated with the shear rate can be determined simultaneously. Hence, the solution is spread using a film applicator within the same mechanical strain deformation scheme. Once dried, the films are observed by SAXS. Finally, a detailed analysis of orientation distribution function obtained from the SAXS diffusion pattern on each film provides a quantitative value of the level of alignment of the polymeric chains.
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