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Polymer Bulletin
Erschienen in: Polymer Bulletin 6/2013

01.06.2013 | Original Paper

Copolymerization of ethylene/1-hexene with zirconocene/MAO catalyst supported on spherical zirconia modified with BCl3, SiCl4, and glycerol

verfasst von: Sasiradee Jantasee, Takeshi Shiono, Bunjerd Jongsomjit

Erschienen in: Polymer Bulletin | Ausgabe 6/2013

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Abstract

The spherical zirconia modified with BCl3, SiCl4, and glycerol was used as the support for rac-Et(Ind)2ZrCl2 catalyst to catalyze the copolymerization of ethylene/1-hexene. It is aimed to investigate the modification effects from different modifiers on copolymerization behaviors and compare the results with the unmodified system. The modified supports show higher activity than the unmodified one. Especially, the SiCl4 modification exhibited the highest activity and produced copolymer with the largest 1-hexene insertion. This can be attributed to stronger interaction between the support and MAO along with the presence of SiCl4 as a spacer group resulting in the absence of induction period. The modification did not affect the copolymers microstructure and the random copolymers were obtained from all supported systems. The narrower molecular weight distribution can be obtained from the modified supports. Besides, BCl3 modification presents the highest molecular weight of polymer probably due to BCl3 suppressing chain transfer reactions.
Vorheriger Artikel Synthesis and solubility of polylactide-co-poly(amino acid) random copolymer
Nächster Artikel Polymerization of propylene catalyzed by α-diimine nickel complexes/methylaluminoxane: catalytic behavior and polymer properties

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Metadaten
Titel
Copolymerization of ethylene/1-hexene with zirconocene/MAO catalyst supported on spherical zirconia modified with BCl3, SiCl4, and glycerol
verfasst von
Sasiradee Jantasee
Takeshi Shiono
Bunjerd Jongsomjit
Publikationsdatum
01.06.2013
Verlag
Springer-Verlag
Erschienen in
Polymer Bulletin / Ausgabe 6/2013
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-013-0919-y

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