Title: Thermal behaviour of homogeneous ethylene-1-octene copolymers and linear polyethylene at high pressures
Authors: Vanden Eynde, S ×
Mathot, Vincent
Hohne, GWH
Schawe, JWK
Reynaers, Harry #
Editors: Mathot, VBF
Issue Date: Jan-2000
Publisher: Elsevier sci ltd
Series Title: Polymer vol:41 issue:9 pages:3411-3423
Abstract: The thermal behaviour of a linear polyethylene (LPE) and of homogeneous ethylene-1-octene copolymers (2.1, 5.2 and 8.0 mol% of 1-octene) was investigated at high pressures by use of a high-pressure differential scanning colorimetry (DSC). The heating curves of LPE at pressures above 400 MPa reveal a three-peak pattern (peaks denoted by I, II, III at increasing temperature). It reflects the melting of orthorhombic folded chain crystals (I); the melting of extended chain crystals, superposed on the orthorhembic-hexagonal solid-solid transition (II) and the melting of the hexagonal phase (III). Introduction of a small amount of 1-octene results in a similar multiple-peak pattern but with a weakened high-temperature peak. With increasing comonomer content this three-peak pattern evolves over a two-peak pattern (I, II) into a single-peaked endotherm (I).
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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