TIT# Small-Angle X-ray Scattering from Blends of PE and SBS. Observation of a
     Novel Kind of Deviation from Porod's law.
AUT# Stribeck, Norbert; Ghioca, Paul; Buzdugan, Emil
SOU# J. Appl. Cryst. (1997), 30, 708-711
LOC# xv029  @selbst.ftx
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ABS# In a study of technical blends from polyethylene and
     polystyrene-polybutadiene star block copolymers, reproducibility of the
     blending process and of the structural analysis is tested. A peculiar
     and reproducible deviation in the angular interval of the scattering
     curve is observed, which is governed by a decay according to Porod's law.
     The notion of a faint electron-density undulation in space with a
     wavelength of $5 nm$ , an amplitude of $1 e.u. nm^{-3}$ and a range of
     $40 nm$ could explain the triangular peak observed in a plot which
     otherwise linearizes the scattering curve in the Porod regime.