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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2421

Title: Characterization of the dual crystal population in an isothermally crystallized homogeneous ethylene-1-octene copolymer
Authors: RABIEJ, Stanislaw
Goderis, B
Janicki, J
Mathot, V.B.F.
Koch, MHJ
Groeninckx, G
Reynaers, H
Wlochowicz, A
Issue Date: 2004
Citation: POLYMER, 45(26). p. 8761-8778
Abstract: The melting of a homogeneous ethylene- 1 -octene copolymer after isothermal crystallization is discussed based on DSC and time-resolved SALS, SAXS and WAXD data. Two melting peaks appear in DSC suggesting the presence of two crystal fractions. All crystals grow in a lamellar habit and there is no evidence for fringed micellar or isolated block-like crystals. The high melting fraction crystallizes while segregating comonomer-rich parts into separate regions where in a later stage the low melting fraction crystallizes. The data support the view of lamellae that grow via the secondary nucleation of crystalline blocks from a preexisting layer-like mesomorphic phase with preservation of the mesomorphic layer thickness. The stability of these blocks increases due to sintering, forming lamellae that melt slightly above the crystallization temperature. The high melting fraction is generated from those lamellae that are able to reduce the crystaline-amorphous interfacial tension. (C) 2004 Elsevier Ltd. All rights reserved.
Notes: Catholic Univ Louvain, Lab Macromol Struct Chem, B-3001 Heverlee, Belgium. Univ Bielsko Biala, PL-43309 Bielsko Biala, Poland. DESY, EMBL, Hamburg Outstn, D-22603 Hamburg, Germany. Limburgs Univ Ctr, Mat Res Inst, IMO, Dept SBG, B-3590 Diepenbeek, Belgium.Goderis, B, Catholic Univ Louvain, Lab Macromol Struct Chem, Celestijnenlaan 200F, B-3001 Heverlee, Belgium.bart.goderis@chem.kuleuven.ac.be
URI: http://hdl.handle.net/1942/2421
DOI: 10.1016/j.polymer.2004.10.045
ISI #: 000225508100014
ISSN: 0032-3861
Category: A1
Type: Journal Contribution
Validation: ecoom, 2006
Appears in Collections: Research publications

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