UV-visible spectroscopic study of rac-Et(Ind)(2)ZrCl2/aluminoxanes

作者：Wang Q^*; Song LX; Zhao Y; Feng LX

来源：Macromolecular Rapid Communications, 2001, 22(13): 1030-1034.

DOI：10.1002/1521-3927(20010901)22:13<1030::AID-MARC1030>3.0.CO;2-R

The UV-visible spectroscopic study of the interaction between rac-Et(Ind)(2)ZrCl2 and different aluminoxanes, such as isobutylaluminoxane (BAO) and ethyl(isobutyl)aluminoxane (EBAO), was conducted under normal polymerization conditions. UV-visible absorption spectra of rac-Et(Ind)(2)ZrCl2/aluminoxanes were correlated with the formation of ionic zirconium species. The influence of different aluminoxanes on the tightness of the metallocenium-aluminoxane ionic pairs was interpreted in terms of the aluminoxane structure. The loose ionic pairs formed in the EBAO system causes a fast decaying kinetic profile, advantageous for copolymerization.

• 单位
  浙江大学