In-situ simultaneous small- and wide-angle X-ray scattering study of poly(ether ester) during cold drawing

The cold drawing of a poly(ether ester) block copolymer was studied by in-situ simultaneous small- and wide-angle X-ray scattering techniques in combination with a tensile stretching apparatus. The results obtained revealed three distinct regions in the stress-strain relationship. At low strains (0 80%), a further extension of the PTMO amorphous chains resulted in the fracture of the sample. The pathway of the structural changes by deformation in the present study was slightly different than those observed in the predrawn samples. © 2003 American Chemical SocietySpanish Ministry of Culture and Education (5B97-K5447945). Full-Bright commission and the DGICYT (Grant PB 94-0049). NSF (DMR-0098104)Peer Reviewe