Polyisoprene-based block copolymers as supports for metallocene and post-metallocene catalytic systems toward ethylene polymerization

被引：4
作者：
Heurtefeu, Bertrand [1 ,2 ]
Oriou, Jules [1 ,2 ]
Ibarboure, Emmanuel [1 ,2 ]
Cloutet, Eric [1 ,2 ]
Cramail, Henri [1 ,2 ]
机构：
[1] Univ Bordeaux, Lab Chim Polymeres Organ, IPB ENSCBP, F-33607 Pessac, France
[2] CNRS, Lab Chim Polymeres Organ, F-33607 Pessac, France
来源：
NEW JOURNAL OF CHEMISTRY | 2011年 / 35卷 / 10期
关键词：
OLEFIN POLYMERIZATION; ORGANIC SUPPORTS; COMPLEXES; MICELLES;
D O I：
10.1039/c1nj20309f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this work, we report how micellar structures obtained by the self-assembly in heptane of polyisoprene-block-poly(methyl methacrylate) (PI-b-PMMA) and polyisoprene-block-poly(ethylene oxide) (PI-b-PEO) can be effectively used as organic supports for ethylene polymerization catalyzed by metallocene and post-metallocene catalysts. The self-assembly in heptane of these block copolymers was demonstrated by means of dynamic light scattering and the influence of methylaluminoxane (MAO) on this self-assembly was analyzed. The so-formed assemblies, composed of either PMMA or PEO cores and PI corona, were used as organic supports for metallocene or post-metallocene catalysts with methylaluminoxane (MAO) as an activator, to produce micrometric polyethylene beads.
引用
收藏
页码：2322 / 2332
页数：11
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