Diffusion Interface Technique for Determination of Initial Polymerization Kinetics

Autor:	Igor Cejpek, Miroslav Skoumal, Chung Ping Cheng
Rok vydání:	2005
Předmět:	chemistry.chemical_classification Heptane Polymers and Plastics Diffusion Organic Chemistry Kinetics Solution polymerization Polymer Polyethylene Catalysis chemistry.chemical_compound chemistry Chemical engineering Polymer chemistry Materials Chemistry Ziegler–Natta catalyst
Zdroj:	Macromolecular Rapid Communications. 26:357-360
ISSN:	1521-3927 1022-1336
DOI:	10.1002/marc.200400565
Popis:	Summary: A new procedure for the investigation of initial kinetics in a slurry olefin polymerization with a Ziegler-Natta catalyst has been developed. It is based on the accurate timing of short polymerizations that result from the immediate start of a reaction between a catalyst separated in an oil phase and the remaining components of the system upon their being mixed together. The polymer samples are suitable for 13C NMR analysis and the number of active sites could be calculated. Schematic illustration of the oil (catalyst)/heptane (monomer-cocatalyst) diffusion interface.
Databáze:	OpenAIRE
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