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Simultaneous Deconvolution of Molecular Weight and Chemical Composition Distribution of Ethylene/1‐Olefin Copolymers: Strategy Validation and Comparison
Author(s) -
Anantawaraskul Siripon,
Bongsontia Warawut,
Soares João B. P.
Publication year - 2011
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201100032
Subject(s) - copolymer , deconvolution , molar mass distribution , ethylene , polymer , olefin fiber , materials science , polymer chemistry , microstructure , chemical engineering , catalysis , chemistry , organic chemistry , composite material , algorithm , computer science , engineering
Ethylene/1‐olefin copolymers made with multiple‐site‐type catalytic systems typically have broad molecular weight distribution (MWD) and chemical composition distribution (CCD) because each site type produces polymer chains with distinct average chain microstructures. In this work, the simultaneous deconvolution of MWD and CCD was investigated to identify the number of site types and chain microstructures made on each site type. Four strategies based on different data sources were tested using the MWD and CCD simulated for an ethylene/1‐butene copolymer made with a catalyst having five site types. Our results indicate that the simultaneous deconvolution of the complete bivariate MWD and CCD is the best approach to describe the complete microstructure of the model ethylene/1‐butene copolymers.