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Tailored Branched Polyolefins by Metallocene Catalysis

✍ Scribed by Walter Kaminsky; Matthias Hoff; Stefanie Derlin

Book ID
102482891
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
188 KB
Volume
208
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Metallocene/methylaluminoxane catalysts are able to design copolymers with tailored architectures. It is possible to copolymerize ethene with higher α‐olefins and cyclic olefins. The terpolymer of ethene/1‐hexene/norbornene shows a better flexibility than the ethene/norbornene copolymer by a similar high transparency. The influence of the comonomer concentration on activity, molecular weight, and glass transition temperature is given as well as the comparison to 1‐hexene/norbornene and propene/norbornene copolymers. Hexene/norbornene copolymers were found to have a predominant alternating microstructure.

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Ethylene–Norbornene Copolymerization by
Ethylene–Norbornene Copolymerization by Carbon Nanotube-Supported Metallocene Catalysis: Generation of High-Performance Polyolefinic Nanocomposites
✍ Stéphane Bredeau; Laura Boggioni; Fabio Bertini; Incoronata Tritto; Fabien Monte 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 285 KB

## Abstract Homogeneous surface coating of multi‐walled carbon nanotubes is achieved for the first time by in situ copolymerization of ethylene (E) and 2‐norbornene (N) as catalyzed directly from the nanotube surface previously treated by a highly active metallocene‐based complex, i.e., __rac__‐Et(