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Performance of a Bis(imine)Pyridine Iron Catalyst System in Ethylene/Norbornene Copolymerization with Zinc Diethyl
Author(s) -
Pereira Leticia Quinello,
de Fatima Vieira Marques Maria
Publication year - 2014
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201300166
Subject(s) - norbornene , methylaluminoxane , copolymer , ethylene , polymer chemistry , catalysis , zinc , polymerization , imine , materials science , polymer , pyridine , crystallinity , chemistry , organic chemistry , metallocene , composite material , metallurgy
Summary Brookhart catalysts are widely used in ethylene polymerization to produce polymers with high molecular weight and crystallinity degree. In the present work, the performance of a bis(imine)pyridine iron catalyst and methylaluminoxane (MAO) as a catalytic system was evaluated for ethylene/norbornene copolymerization and the influence of adding zinc diethyl (DEZ) in the reaction medium was investigated. The results showed that the system was effective in copolymerization besides the low incorporation of norbornene in polymer chain, as indicated by multimodal profiles in DSC and high crystalline degree.