Copolymerization of ethylene and 1-dodecene catalyzed by novel low-Ti-loading Ziegler-Natta catalysts and their microstructures

Zhenrong Zhao; Li Wang; Jianfeng Wang; Xiaochen Dong; Haojie Yu

doi:10.1002/app.25756

Copolymerization of ethylene and 1-dodecene catalyzed by novel low-Ti-loading Ziegler-Natta catalysts and their microstructures

Zhenrong Zhao, Li Wang, Jianfeng Wang, Xiaochen Dong, Haojie Yu

Research output: Contribution to journal › Article › peer-review

Abstract

Ethylene-1-dodecene copolymers were synthesized with novel low-Ti-loading (0.8 wt%) Ziegler-Natta catalysts prepared by a one-pot balling method. ¹³C-NMR was applied for the quantitative determination of the composites and microstructures of the resultant ethylene-1-dodecene copolymers. The results showed that (1) the ethylene-1-dodecene copolymers obtained from both the MgCl₂-supported low-Ti-loading Ziegler-Natta catalyst and the MgCl₂/SiO₂-bisupported low-Ti-loading Ziegler-Natta catalyst at a 0.6M 1-dodecene concentration had high levels of 1-dodecene and (2) most of the 1-dodecene units were separated by ethylene units in the copolymer chains obtained from the MgCl₂-supported low-Ti-loading Ziegler-Natta catalyst, whereas there were some continuous 1-dodecene repeat units in the copolymer chain obtained from the MgCl₂/SiO ₂-bisupported low-Ti-loading Ziegler-Natta catalyst.

Original language	English
Pages (from-to)	1200-1204
Number of pages	5
Journal	Journal of Applied Polymer Science
Volume	104
Issue number	2
DOIs	https://doi.org/10.1002/app.25756
State	Published - 15 Apr 2007
Externally published	Yes

Keywords

Catalysts
Copolymerization
Microstructure
Polyolefins

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10.1002/app.25756

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title = "Copolymerization of ethylene and 1-dodecene catalyzed by novel low-Ti-loading Ziegler-Natta catalysts and their microstructures",

abstract = "Ethylene-1-dodecene copolymers were synthesized with novel low-Ti-loading (0.8 wt%) Ziegler-Natta catalysts prepared by a one-pot balling method. 13C-NMR was applied for the quantitative determination of the composites and microstructures of the resultant ethylene-1-dodecene copolymers. The results showed that (1) the ethylene-1-dodecene copolymers obtained from both the MgCl2-supported low-Ti-loading Ziegler-Natta catalyst and the MgCl2/SiO2-bisupported low-Ti-loading Ziegler-Natta catalyst at a 0.6M 1-dodecene concentration had high levels of 1-dodecene and (2) most of the 1-dodecene units were separated by ethylene units in the copolymer chains obtained from the MgCl2-supported low-Ti-loading Ziegler-Natta catalyst, whereas there were some continuous 1-dodecene repeat units in the copolymer chain obtained from the MgCl2/SiO 2-bisupported low-Ti-loading Ziegler-Natta catalyst.",

keywords = "Catalysts, Copolymerization, Microstructure, Polyolefins",

author = "Zhenrong Zhao and Li Wang and Jianfeng Wang and Xiaochen Dong and Haojie Yu",

year = "2007",

month = apr,

day = "15",

doi = "10.1002/app.25756",

language = "英语",

volume = "104",

pages = "1200--1204",

journal = "Journal of Applied Polymer Science",

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publisher = "John Wiley & Sons Inc.",

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TY - JOUR

T1 - Copolymerization of ethylene and 1-dodecene catalyzed by novel low-Ti-loading Ziegler-Natta catalysts and their microstructures

AU - Zhao, Zhenrong

AU - Wang, Li

AU - Wang, Jianfeng

AU - Dong, Xiaochen

AU - Yu, Haojie

PY - 2007/4/15

Y1 - 2007/4/15

N2 - Ethylene-1-dodecene copolymers were synthesized with novel low-Ti-loading (0.8 wt%) Ziegler-Natta catalysts prepared by a one-pot balling method. 13C-NMR was applied for the quantitative determination of the composites and microstructures of the resultant ethylene-1-dodecene copolymers. The results showed that (1) the ethylene-1-dodecene copolymers obtained from both the MgCl2-supported low-Ti-loading Ziegler-Natta catalyst and the MgCl2/SiO2-bisupported low-Ti-loading Ziegler-Natta catalyst at a 0.6M 1-dodecene concentration had high levels of 1-dodecene and (2) most of the 1-dodecene units were separated by ethylene units in the copolymer chains obtained from the MgCl2-supported low-Ti-loading Ziegler-Natta catalyst, whereas there were some continuous 1-dodecene repeat units in the copolymer chain obtained from the MgCl2/SiO 2-bisupported low-Ti-loading Ziegler-Natta catalyst.

AB - Ethylene-1-dodecene copolymers were synthesized with novel low-Ti-loading (0.8 wt%) Ziegler-Natta catalysts prepared by a one-pot balling method. 13C-NMR was applied for the quantitative determination of the composites and microstructures of the resultant ethylene-1-dodecene copolymers. The results showed that (1) the ethylene-1-dodecene copolymers obtained from both the MgCl2-supported low-Ti-loading Ziegler-Natta catalyst and the MgCl2/SiO2-bisupported low-Ti-loading Ziegler-Natta catalyst at a 0.6M 1-dodecene concentration had high levels of 1-dodecene and (2) most of the 1-dodecene units were separated by ethylene units in the copolymer chains obtained from the MgCl2-supported low-Ti-loading Ziegler-Natta catalyst, whereas there were some continuous 1-dodecene repeat units in the copolymer chain obtained from the MgCl2/SiO 2-bisupported low-Ti-loading Ziegler-Natta catalyst.

KW - Catalysts

KW - Copolymerization

KW - Microstructure

KW - Polyolefins

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DO - 10.1002/app.25756

M3 - 文章

AN - SCOPUS:33947677216

SN - 0021-8995

VL - 104

SP - 1200

EP - 1204

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 2

ER -

Copolymerization of ethylene and 1-dodecene catalyzed by novel low-Ti-loading Ziegler-Natta catalysts and their microstructures

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Keywords

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