Polystyrene triblock coplymer SEBS
The SAXS pattern of polystyrene-poly(ethylene-r-butene)-polystyrene triblock copolymer (SEBS), oriented in plane strain compression (left) and the plot of "unwrapped" theta vs. Q (right). The scattering image was taken on Rigaku point-focusing S-Max3000 SAXS system with a MicroMax-002+ microfocus X-ray source by research group of Prof. Richard A. Register in Department of Chemical Engineering at the Princeton University, Princeton, NJ.
The SAXS pattern reveals that the SEBS self-assembles into an ordered cylindrical structure with parameters shown in the picture below. The SAXS data also reveal an extremely strong orientation of the cylinders in the flow direction (FD). This point-focusing SAXS system can be used to reveal the local orientation at any point within the sample.
