TIT# Nanostructure Deformation Behavior in Poly(ethylene terephthalate)/
     Polyethylene Drawn blend as Revealed by Small-Angle Scattering of
     Synchrotron X Radiation
AUT# Fakirov, S.; Samokovlijsky, O.; Stribeck, N.; Apostolov, A. A.;
     Denchev, Z.; Sapoundjieva, D.; Evstatiev, M.; Meyer, A.; Stamm, M.;
SOU# Macromolecules (2001), 34, 3314-3317
LOC# xv059
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ABS# The nanostructure deformation mechanism of a predrawn and annealed blend
     of poly(ethylene terephthalate) (PET) and polyethylene (PE) (PET/PE:
     50/50 by wt. %) was studied. For the first time six-point small-angle
     X-ray scattering (SAXS) patterns were observed as a function of elongation
     in the investigation of a drawn polymer blend fiber sample. It was found
     that the meridional two-point pattern arises from PET and the inclined
     four-point one from PE. Long spacings and the angle between inclined
     reflections and fiber axis were detemined as a function of draw ratio.
     At lower external strain elongation up to 13 %) the macro-deformation
     is related to conformational changes located only in amorphous material
     outside the lamellar stacks, whereas at higher elongation destruction
     of layer crystallites is observed, possibly due to pull-out of chains.