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Polymerization of olefins through heterogeneous catalysis. VIII. Monomer sorption effects
Author(s) -
Hutchinson R. A.,
Ray W. H.
Publication year - 1990
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.1990.070410106
Subject(s) - sorption , monomer , polymerization , polymer , crystallinity , polymer chemistry , copolymer , olefin fiber , materials science , chemical engineering , diluent , catalysis , chain transfer , chemistry , radical polymerization , organic chemistry , adsorption , engineering , composite material
In solid catalyzed olefin polymerization, equilibrium sorption plays a key role in determining the local monomer concentration (s) in the semicrystalline polymer shell which surrounds the active sites of the catalyst surface. Modelling based on polymer solution thermodynamics indicates that crystallinity and reactor environment have a major effect on this local monomer concentration. The model is used to explain well known experimental trends seen in the literature, such as observed differences in gas phase and diluent slurry polymerization rates, and enhanced α‐olefin incorporation in gas phase copolymerization.