Simultaneous small-angle X-ray scattering/wide-angle X-ray diffraction study of the microdomain structure of polyurethane elastomers during mechanical deformation

Microdomain structure of polyurethane elastomers (PUEs) during mechanical deformation was investigated using simultaneous small-angle X-ray scattering (SAXS)/wide-angle X-ray diffraction measurements. In the SAXS profile for the PUEs, a four-point pattern or a meridional scattering was observed during the deformation process depending on curing temperatures. The relationship between the initial microdmain structure and deformation behavior was discussed in detail.