Title: Thermal behaviour and morphology of homogeneous ethylene-propylene and ethylene-1-butene copolymers with high comonomer contents
Authors: Vanden Eynde, S ×
Mathot, Vincent
Koch, MHJ
Reynaers, Harry #
Issue Date: Jan-2000
Publisher: Elsevier sci ltd
Series Title: Polymer vol:41 issue:9 pages:3437-3453
Abstract: The thermal behaviour and morphology of series of homogeneous ethylene-propylene and ethylene-l-butene copolymers, which cover wide ranges in comonomer content, are studied by differential scanning calorimetry (DSC), time-resolved small-angle X-ray scattering (SAXS), wide-angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM). The thermal behaviour and the morphology of the copolymers change in a continuous way as the comonomer content is increased, supporting the model in which the morphology changes gradually from a lamellar base morphology into a granular one consisting of small block-shaped structures. When the comonomer amount is raised further to very high contents, possibly via fringed-micelles a morphology consisting of loosely packed ethylene sequences is obtained. Although the granular structures, present in the very-low-density copolymers, are too small and/or too imperfect to be detected by WAXD, the crystallisation and melting processes could still be readily measured by DSC and SAXS.
ISSN: 0032-3861
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Chemistry - miscellaneous
× corresponding author
# (joint) last author

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