Publication detail
Living polymerization of olefins initiated by nickel catalysts
MERNA, J., CIHLÁŘ, J., KUČERA, M., HERMANOVÁ, S.
Original Title
Living polymerization of olefins initiated by nickel catalysts
English Title
Živá polymerace alkenů iniciovaná niklovými katalyzátory
Type
journal article - other
Language
Czech
Original Abstract
Nickel diimine complexes have recently been shown as efficient catalyst for olefin polymerization. Besides, polymerization of higher a-olefins initiated by some nickel catalysts proceeds in living-like fashion, i.e. without noticeable transfer and termination. This contribution reports for the first time on living-like polymerization of olefins initiated by several others diimine complexes of nickel. Further, unusual kinetics of these systems is observed revealing decrease of propagation rate constant values with increase of initial monomer concentration. This behavior can be correlated with suggested mechanism, which includes competition between isomerization (chain walking) and propagation reaction, and is documented by changes in polymer microstructure.
English abstract
Nickel diimine complexes have recently been shown as efficient catalyst for olefin polymerization. Besides, polymerization of higher a-olefins initiated by some nickel catalysts proceeds in living-like fashion, i.e. without noticeable transfer and termination. This contribution reports for the first time on living-like polymerization of olefins initiated by several others diimine complexes of nickel. Further, unusual kinetics of these systems is observed revealing decrease of propagation rate constant values with increase of initial monomer concentration. This behavior can be correlated with suggested mechanism, which includes competition between isomerization (chain walking) and propagation reaction, and is documented by changes in polymer microstructure.
Key words in English
nickel olefins polymerization living
Authors
MERNA, J., CIHLÁŘ, J., KUČERA, M., HERMANOVÁ, S.
RIV year
2005
Released
25. 8. 2005
Publisher
Česká společnost chemická
Location
Brno
ISBN
0009-2770
Periodical
Chemické listy
Year of study
99
Number
symposia
State
Czech Republic
Pages from
373
Pages to
376
Pages count
4
BibTex
@article{BUT46595,
author="Jan {Merna} and Soňa {Hermanová} and Miloslav {Kučera} and Jaroslav {Cihlář}",
title="Living polymerization of olefins initiated by nickel catalysts",
journal="Chemické listy",
year="2005",
volume="99",
number="symposia",
pages="373--376",
issn="0009-2770"
}