Detail publikace

Living/controlled hex-1-ene polymerization initiated by nickel diimine complexes activated by non-MAO cocatalysts: Kinetic and UV-vis study

PELEŠKA, J. HOŠŤÁLEK, Z. HASALÍKOVÁ, D. MERNA, J.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Living/controlled polymerization of hex-1-ene initiated by nickel diimine catalysts of general form [ArN=C(1,8-naphthalenediyl)C=NAr]NiBr2 activated by simple organoaluminium compounds was investigated. Polyhexenes with a very narrow molar mass distribution and molar mass controlled by the monomer/initiator ratio were prepared using diethylaluminiumchloride, ethylaluminiumdichloride and methylaluminiumdichloride as cocatalysts for nickel complexes 1 (Ar = 2,6-iPr2C6H3) and 2 (Ar = 2-tBuC6H4). Nickel complexes with smaller aryl substituents (3, Ar = 2,6-Me2C6H3; 4 Ar = 2,4,6-Me3C6H2; 5, Ar = 2,6-Et2C6H3) undergo transfer reactions significantly. For the most bulky complex 1 activated by ethylaluminiumdichloride living hex-1-ene polymerization was achieved, proved by the reinitiation of polymer growth upon the addition of fresh monomer. The effect of Al/Ni ratio on the activity of the catalytic systems was studied by dilatometry. The catalytic systems were investigated by UV-vis spectrometry and a new interpretation of their absorption spectra was suggested.

Klíčová slova

Nickel catalyst, living/controlled olefin polymerization, non-MAO cocatalysts

Autoři

PELEŠKA, J.; HOŠŤÁLEK, Z.; HASALÍKOVÁ, D.; MERNA, J.

Rok RIV

2011

Vydáno

21. 1. 2011

ISSN

0032-3861

Periodikum

Polymer

Ročník

Číslo

Stát

Spojené království Velké Británie a Severního Irska

Strany od

275

Strany do

281

Strany počet

BibTex

@article{BUT50985,
  author="PELEŠKA, J. and HOŠŤÁLEK, Z. and HASALÍKOVÁ, D. and MERNA, J.",
  title="Living/controlled hex-1-ene polymerization initiated by nickel diimine complexes activated by non-MAO cocatalysts: Kinetic and UV-vis study",
  journal="Polymer",
  year="2011",
  volume="52",
  number="2",
  pages="275--281",
  issn="0032-3861"
}