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Dynamic modeling and experimental evaluation of olefin copolymerization with vanadium‐based catalysts
Author(s) -
Pourhossaini Mohammad Reza,
VasheghaniFarahani Ebrahim,
Gholamian Maryam,
Gholamian Mahmood
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22473
Subject(s) - copolymer , dispersity , olefin fiber , ethylene , polymer , materials science , catalysis , vanadium , polymerization , polymer chemistry , natta , molar mass distribution , chemical engineering , chemistry , organic chemistry , composite material , engineering , metallurgy
In this study, we developed a mathematical model for olefin copolymerization using soluble Ziegler–Natta catalysts in a semibatch reactor to predict the reaction rate and polymer characteristics (i.e., molecular weight, polydispersity, and ethylene content) as functions of the reaction parameters (i.e., time, temperature, pressure, concentrations, and so on) accurately. The proposed model differs from others because it considers the olefin copolymerization as a dynamic process and applies double moments for two reactants (ethylene and propylene) in the presence of hydrogen. To establish the model validity, the copolymerization was performed with VOCl 3 Al 2 Et 3 Cl 3 systems with hydrogen as a molecular weight controlling agent. The dynamic model was able to reproduce the experimental data within experimental accuracy and accurately demonstrated the fundamental importance of the polymerization variables on the final properties of the polymer material in the copolymerization of ethylene and propylene with Al/V ratios of up to 28 before synthesis. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3101–3110, 2006