Reference : Polymerization-filled composites prepared with highly active filler-supported Al/Ti/M...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/66258
Polymerization-filled composites prepared with highly active filler-supported Al/Ti/Mg catalysts. I. Synthesis of homogeneous polyethylene-based composites
English
Hindryckx, François [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Dubois, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Teyssié, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Garcia Marti, Miguel [DOW Benelux, Terneuzen, The Netherlands > > > >]
18-Apr-1997
Journal of Applied Polymer Science
Wiley
64
3
423-438
Yes (verified by ORBi)
International
0021-8995
[en] nanostructured material ; nanocomposite ; alkene
[en] When it is attached onto the surface of an inorganic filler (kaolin, barite), the (BuO)4Ti/BuMgOct/EtAlCl2/Et3Al system is a highly efficient and very promising catalyst for the production of high-performance polyethylene-based composites. The surface concentration of the hydroxyl groups, the Al/Ti/Mg ratio, and the purity of the reagents have a major effect on the catalyst efficiency and molecular weight, crystallinity, and physico-mechanical properties of the final composite. Under ca. 4 bar partial pressure of ethylene in heptane at 60°C, the optimum Al/Ti/Mg catalyst composition is 120/0.75/10, the efficiency of which is as high as 300 kgPE/(gTi × h) in the presence of kaolin particles (Satintone W/W). The effect of transfer agents, such as hydrogen and 1-octene, and purity of the -olefin has been investigated. Actually, the catalyst efficiency is increased in the presence of both hydrogen and octene. Scanning Electron Microscopy (SEM) has shown that the ethylene was polymerized from the filler surface. Special attention has also been paid to the effect of size, density, and surface acidity of the filler particles. The surface of basic filler has to be treated in order to become an efficient catalyst carrier.
Center for Education and Research on Macromolecules (CERM)
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Dow Benelux, Terneuzen
Researchers
http://hdl.handle.net/2268/66258
10.1002/(SICI)1097-4628(19970418)64:3<423::AID-APP2>3.0.CO;2-M
http://www3.interscience.wiley.com/cgi-bin/fulltext/43205/PDFSTART

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