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Mathematical Modeling of Crystallization Elution Fractionation of Ethylene/1‐Octene Copolymers
Author(s) -
Chokputtanawuttilerd Nuttawat,
Anantawaraskul Siripon,
Inwong Nantiya,
Soares João B. P.
Publication year - 2015
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201400518
Subject(s) - comonomer , elution , fractionation , crystallization , copolymer , dissolution , ethylene , crystallinity , polyolefin , chemistry , materials science , polymer , chemical engineering , chromatography , polymer chemistry , organic chemistry , catalysis , crystallography , layer (electronics) , engineering
Crystallization elution fractionation (CEF) is a relatively new polyolefin characterization technique used to estimate the chemical composition distribution (CCD) of semicrystalline copolymers. CEF is developed to enhance the resolution and reduce the analysis time of temperature rising elution fractionation (TREF) by separating polymer samples in both the crystallization and elution steps. A model based on the concept of population balance, crystallization/dissolution kinetics, and dispersion model is developed to understand the CEF fractionation mechanisms. The proposed CEF model is found to describe well the experimental CEF profiles of a series of ethylene/1‐octene copolymers with different comonomer contents.