Emprego de catalisadores à base de níquel para homo- e copolimerização de estireno

Química Nova

Luis Carlos Ferreira Jr.¹  Marcos A. S. Costa¹  Luiz Claudio De Santa Maria¹  Fernanda M. B. Coutinho¹  Pedro I. C. Guimarães¹ 

[1] ,Universidade do Estado do Rio de Janeiro Instituto de Química Rio de Janeiro RJ

关键词: nickel catalysts;    polystyrene;    styrene copolymers;   

DOI  :  10.1590/S0100-40422004000600017

来源: SciELO

【 摘 要 】

This review deals with the homo- and copolymerization of styrene with nickel catalysts. The catalytic activity, polymer stereoregularity, polymer molecular weight and polydispersity are dependent upon nickel ligands and reaction parameters. Catalysts supported on silica, treated with methylaluminoxane (MAO), have shown higher stereospecificity and activity compared to homogeneous ones. The influence of these parameters is discussed focusing on the elucidation of some aspects of the polymerization mechanism.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License