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Bimodal polyethylene promoted by novel nickel complex
Author(s) -
Tang Xiubo,
Cui Yong,
Sun WenHua,
Miao Zhenjiang,
Yan Shouke
Publication year - 2004
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1646
Subject(s) - methylaluminoxane , polyethylene , nickel , ethylene , polymer chemistry , catalysis , polymerization , materials science , polymer , chemistry , organic chemistry , metallocene , metallurgy , composite material
A novel nickel complex, bis[2‐methyl‐2,4‐bis(2′‐pyridyl)‐1 H ‐1,5‐benzodiazepine]nickel dichloride, displayed good activity for oligomerization and polymerization of ethylene with the assistance of a co‐catalyst, methylaluminoxane (MAO). The oligomers were mainly olefins from C 4 to C 10 , while the highly branched polyethylene (PE) had molecular weights ( M w ) in the range 19 000–34 000. Bimodal distributions of the PE were clearly observed by both DSC and GPC measurements, while the spherulitic structure of the PE was shown in the morphology. Copyright © 2004 Society of Chemical Industry