13Carbon nuclear magnetic resonance characterization of ethylene–propylene–1-OCTADECENE (cas 112-88-9) terpolymers and comparison with ethylene–propylene–1-hexene and 1-decene terpolymers

Add time:08/24/2019    Source:sciencedirect.com

In this paper, we report the complete 13C NMR characterization of a set of ethylene–propylene–1-octadecene terpolymers obtained with the metallocenic system rac-ethylene bis-indenyl zirconium dichloride, using different comonomer ratios. A detailed study of 13C NMR chemical shifts, triad sequence distributions, monomer average sequence lengths and reactivity ratios for these terpolymers is presented. The incorporations of 1-octadecene were superior of those obtained using 1-hexene and 1-decene in the same conditions. Catalytic activities of terpolymers of ethylene–propylene and α-olefins (α-olefins:1-hexene, 1-decene and 1-octadecene) were compared showing that they increase with the amount of propylene in the feed.

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