PREPARATION OF NOVEL POLYETHYLENE-graft-POLY(4-VINYLPYRIDINE)-SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION*

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PREPARATION OF NOVEL POLYETHYLENE-graft-POLY(4-VINYLPYRIDINE)-SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION*

Papers | Updated：2021-06-21

- PREPARATION OF NOVEL POLYETHYLENE-graft-POLY(4-VINYLPYRIDINE)-SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION*
- Vol. 21, Issue 5, Pages: 557-562(2003)
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- Published：20 October 2003
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PREPARATION OF NOVEL POLYETHYLENE-graft-POLY(4-VINYLPYRIDINE)-SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION*[J]. 2003, 21(5): 557-562.
DOI：

PREPARATION OF NOVEL POLYETHYLENE-graft-POLY(4-VINYLPYRIDINE)-SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION*[J]. 2003, 21(5): 557-562. DOI：

摘要

Polyethylene (PE) grafting 4-vinylpyridine copolymers has been produced as powders of different rushes by theirradiation method. After treatment with methylaluminoxane (MAO)

the copolymers were used as supports for Cp2ZrCl2catalyst Results of X-ray photoelectron spectroscopy

Fourier transforms infrared spectroscopy

ultraviolet spectroscopy andscanning electron microscope measurements show that the catalytic sites have been linked through MAO on the PE-graft-4-vinylpyridine (PEVP). The percentages of grafting 4-vinylpyridine and supported Cp2ZrCl2 depend on the size of polyethylene powder.The smaller the polyethylene powder

the more percent of 4-vinylpyridine groups and Cp2ZrCl2 exist on the polyethylene chains

and the PEVP-supported catalyst has a relatively high activity for ethylene polymerization.

Abstract

Polyethylene (PE) grafting 4-vinylpyridine copolymers has been produced as powders of different rushes by theirradiation method. After treatment with methylaluminoxane (MAO)

the copolymers were used as supports for Cp2ZrCl2catalyst Results of X-ray photoelectron spectroscopy

Fourier transforms infrared spectroscopy

the more percent of 4-vinylpyridine groups and Cp2ZrCl2 exist on the polyethylene chains

and the PEVP-supported catalyst has a relatively high activity for ethylene polymerization.

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