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"
}