Diffusion Interface Technique for Determination of Initial Polymerization Kinetics

✍ Scribed by Miroslav Skoumal; Igor Cejpek; Chung Ping Cheng

• Book ID: 102497190
• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 108 KB
• Volume: 26
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200400565

✦ Synopsis

Abstract

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 ^13^C NMR analysis and the number of active sites could be calculated.

Schematic illustration of the oil (catalyst)/heptane (monomer‐cocatalyst) diffusion interface.

magnified imageSchematic illustration of the oil (catalyst)/heptane (monomer‐cocatalyst) diffusion interface.