Copolymerization behavior of Cp2ZrCl2/MAO and [(CO)5WC(Me)OZrCp2Cl]/MAO: A comparative study on ethylene/1-pentene copolymers

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dc.contributor.authorLuruli N.
dc.contributor.authorHeinz L.-C.
dc.contributor.authorGrumel V.
dc.contributor.authorBrull R.
dc.contributor.authorPasch H.
dc.contributor.authorRaubenheimer H.G.
dc.date.accessioned2011-05-15T16:02:17Z
dc.date.available2011-05-15T16:02:17Z
dc.date.issued2006
dc.description.abstractEthylene/1-pentene copolymers were synthesized using Cp 2ZrCl2(1)/MAO and [(CO)5WC(Me)OZr(Cp) 2Cl](2)/MAO catalyst systems. The copolymers were characterized by SEC, DSC, FTIR and 13C NMR spectroscopy. The copolymers synthesized with [(CO)5WC(Me)OZr(Cp)2Cl](2)/MAO had higher average molecular weights and broader polydispersities compared to those produced with Cp2ZrCl2(1)/MAO. The chemical heterogeneity was investigated by SEC-FTIR and fractionation techniques. All copolymers showed a higher incorporation of the 1-pentene in the low molecular weight fraction as revealed by SEC-FTIR. Crystallization analysis fractionation (CRYSTAF) showed a broad chemical composition distribution (CCD) for all the copolymers synthesized with these two catalyst systems. Selected copolymers were also analyzed using an automated preparative molecular weight fractionation. © 2005 Elsevier Ltd. All rights reserved.
dc.description.versionArticle
dc.identifier.citationPolymer
dc.identifier.citation47
dc.identifier.citation1
dc.identifier.issn323861
dc.identifier.other10.1016/j.polymer.2005.11.042
dc.identifier.urihttp://hdl.handle.net/10019.1/12397
dc.subjectBiosynthesis
dc.subjectCatalysts
dc.subjectComposition
dc.subjectEthylene
dc.subjectFractionation
dc.subjectMolecular weight
dc.subjectNuclear magnetic resonance spectroscopy
dc.subjectAutomated preparative molecular weight fractionation (PMWF)
dc.subjectChemical heterogeneity
dc.subjectEthylene/1-pentene copolymers
dc.subjectShort chain branching distribution (SCBD)
dc.subjectCopolymerization
dc.subjectpolymer science
dc.titleCopolymerization behavior of Cp2ZrCl2/MAO and [(CO)5WC(Me)OZrCp2Cl]/MAO: A comparative study on ethylene/1-pentene copolymers
dc.typeArticle
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