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Simulation of Crystallization Analysis Fractionation (Crystaf) of Linear Olefin Block Copolymers
Author(s) -
Anantawaraskul Siripon,
Somnukguande Punnawit,
Soares João B. P.
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950822
Subject(s) - polyolefin , microstructure , copolymer , materials science , olefin fiber , monte carlo method , elastomer , polymer chemistry , work (physics) , crystallization , fractionation , block (permutation group theory) , polymer science , composite material , thermodynamics , polymer , chromatography , mathematics , chemistry , physics , geometry , statistics , layer (electronics)
Summary: Linear olefin block copolymers (OBCs) have microstructures that are unique among polyolefins and exhibit properties that are different from those of other polyolefin elastomers. Characterizing their chain microstructures is a challenging task, as conventional characterization techniques cannot probe directly block length distribution or composition. In this work, we used a Monte Carlo model to predict the microstructure details of OBCs and a modified version of the Crystaf model previously developed in our groups to describe theoretical Crystaf profiles for model OBCs. This model can be used as a tool to interpret Crystaf results of these interesting new polyolefins and to relate them to OBC microstructures. Effects of polymerization parameters on OBC microstructure and Crystaf profiles were also discussed.