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  4. Homogeneous copolymers of ethylene with alpha-olefins synthesized with metallocene catalysts and their use as standards for TREF calibration
 
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2013
Journal Article
Title

Homogeneous copolymers of ethylene with alpha-olefins synthesized with metallocene catalysts and their use as standards for TREF calibration

Abstract
A range of crystalline copolymers of ethylene with -olefins (propene, hexene, octene and octadecene) were prepared using the complexes Et(Ind)2ZrCl2 and (nBuCp)2ZrCl2 activated with MAO. The average composition of the copolymers was measured using 1H- and 13C-NMR. Then the samples were characterized by High Temperature SEC and DSC. These investigations showed that polymers are homogeneous in composition and consequently were suitable to be used as standards for TREF. This work provided calibrations curves for TREF that can be used on a wide range of -olefin contents. Finally, these calibrations curves were used to characterize heterogeneous copolymers of ethylene/hexene synthesized using a conventional Ziegler-Natta catalyst.
Author(s)
Cossoul, E.
Baverel, L.
Martigny, E.
Macko, Tibor  
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Boisson, C.
Boyron, O.
Journal
Macromolecular symposia  
Conference
International Conference on Polyolefin Characterization (ICPC) 2012  
DOI
10.1002/masy.201300022
Language
English
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Keyword(s)
  • homogeneous copolymer

  • Alpha-Olefin

  • metallocene catalyst

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