Polymer International, ( ISI ), Volume (58), No (1), Year (2009-1) , Pages (40-45)

Title : ( Kinetic and morphological study of a magnesium ethoxide-based Ziegler–Natta catalyst for propylene polymerization )

Authors: Ali Dashti , Ahmad Ramazani SA , Yuichi Hiraoka , Sang Yull Kim , Toshiaki Taniike , Minoru Terano ,

Citation: BibTeX | EndNote

Abstract BACKGROUND: Kinetic andmorphological aspects of slurry propylene polymerization using a MgCl2-supported Ziegler–Natta catalyst synthesized from a Mg(OEt)2 precursor are investigated in comparison with a ball-milled Ziegler–Natta catalyst. RESULTS: The two types of catalyst show completely different polymerization profiles: mild activation and long-standing activity with good replication of the catalyst particles for the Mg(OEt)2-based catalyst, and rapid activation and deactivation with severe fragmentation of the catalyst particles for the ball-milled catalyst. The observed differences arediscussed in relation to spatial distribution of TiCl4 on the outermost part and inside of the catalyst particles. CONCLUSION: The Mg(OEt)2-based Ziegler–Natta catalyst is believed to show highly stable polymerization activity and good replication because of the uniform titanium distribution all over the catalyst particles.

Keywords

, Ziegler–Natta propylene polymerization; kinetics; morphology; Mg(OEt)2, based
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@article{paperid:1032443,
author = {Dashti, Ali and Ahmad Ramazani SA and Yuichi Hiraoka and Sang Yull Kim and Toshiaki Taniike and Minoru Terano},
title = {Kinetic and morphological study of a magnesium ethoxide-based Ziegler–Natta catalyst for propylene polymerization},
journal = {Polymer International},
year = {2009},
volume = {58},
number = {1},
month = {January},
issn = {0959-8103},
pages = {40--45},
numpages = {5},
keywords = {Ziegler–Natta propylene polymerization; kinetics; morphology; Mg(OEt)2-based catalyst},
}

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%0 Journal Article
%T Kinetic and morphological study of a magnesium ethoxide-based Ziegler–Natta catalyst for propylene polymerization
%A Dashti, Ali
%A Ahmad Ramazani SA
%A Yuichi Hiraoka
%A Sang Yull Kim
%A Toshiaki Taniike
%A Minoru Terano
%J Polymer International
%@ 0959-8103
%D 2009

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