Print version ISSN 0100-4042
FERREIRA JR., Luis Carlos et al. The use of nickel-based catalysts for homo-and copolymerization of styrene. Quím. Nova [online]. 2004, vol.27, n.6, pp. 925-933. ISSN 0100-4042. http://dx.doi.org/10.1590/S0100-40422004000600017.
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.
Keywords : nickel catalysts; polystyrene; styrene copolymers.