NMR Characterization of Ethylene/Propylene Copolymers and Propylene Impact Copolymers from MgCl(2)/TiCl(4)/ID+AlR(3)/ED Catalytic Systems

The aim of this work was to study the comonomer distribution and the chemical composition distribution generated by different Ziegler-Natta (ZN) systems (different internal donors, ID, dicyclopentadienyl-dimethoxy silane, D donor, as the external donor) and to define the potentialities of different...

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Main Authors: Camurati, I, Gioia, G, Piemontesi, F, Tartarini, S, Bonazza, A, Farotti, A, Colonnesi, M
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:The aim of this work was to study the comonomer distribution and the chemical composition distribution generated by different Ziegler-Natta (ZN) systems (different internal donors, ID, dicyclopentadienyl-dimethoxy silane, D donor, as the external donor) and to define the potentialities of different IDs to produce improved heterophasic copolymers (HECO). A methodology to quantify the amount of ethylene-propylene copolymer (EP) portion in ZN-HECO and ethylene content of the EP portion by (13)C-NMR was established. By using this method, it was possible to analyze the composition of ZN-HECO obtaining results comparable to those obtained with a more complex fractionation technique.
ISSN:1022-1360
DOI:10.1002/masy.200950811