Živá polymerace alkenů iniciovaná niklovými katalyzátory

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F05%3APU53047" target="_blank" >RIV/00216305:26310/05:PU53047 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

Living polymerization of olefins initiated by nickel catalysts

Original language description

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.

Czech name

Living polymerization of olefins initiated by nickel catalysts

Czech description

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.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2005

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemické Listy

ISSN

0009 - 2770

e-ISSN

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Volume of the periodical

99

Issue of the periodical within the volume

symposia

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

373-376

UT code for WoS article

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EID of the result in the Scopus database

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