13C NMR determination of the microstructure of polypropylene obtained with the DADNi(NCS)2/methylaluminoxane catalyst system

被引：31

作者：

Galland, GB

Da Silva, LP

Dias, ML

Crossetti, GL

Ziglio, CM

Filgueiras, CAL

机构：

[1] Univ Fed Rio Grande do Sul, Inst Quim, BR-91501970 Porto Alegre, RS, Brazil

[2] Univ Fed Rio de Janeiro, Inst Macromol Prof Eloisa Mano, BR-21945970 Rio De Janeiro, Brazil

[3] Univ Fed Rio de Janeiro, COPPE, Programa Engn Quim, BR-21945970 Rio De Janeiro, Brazil

[4] Univ Fed Rio de Janeiro, Inst Quim, Dept Quim Inorgan, BR-21945970 Rio De Janeiro, Brazil

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2004年 / 42卷 / 09期

关键词：

organometallic catalysts; microstructure; NMR; poly(propylene) (PP); syndiotactic;

D O I：

10.1002/pola.20047

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A complete C-13 NMR characterization of a polymer synthesized with a new Ni-diimine complex [DADNi(NCS)(2), where DAD = 2,6-iPr-C6H3-N=C(Me)-C(Me)=N-2,6-iPr-C6H3] activated by methylaluminoxane by homopolymerization of propylene is presented. The amorphous material was made up mainly of blocks of syndiotactic polypropylene and ethylene-propylene copolymer. Some degree of propylene inversion (<1.2 mol %) and of long isobutyl and 2-methyl hexyl branching (<1 mol %) were assigned and quantified. (C) 2004 Wiley Periodicals, Inc.

引用

页码：2171 / 2178

页数：8

共 25 条

[1] C-13 NMR CHEMICAL-SHIFT OF REGIOIRREGULAR POLYPROPYLENE [J].