Stereospecific polymerization of styrene using a homogeneous lanthanide catalyst

摘要

AbstractStereospecific polymerization of styrene was catalyzed by homogeneous neodymium phosphonate [Nd(P507)3]‐H2O‐Al(i‐Bu)3catalytic system. The polymer was separated into isotactic polystyrene and atactic polystyrene by extracting the latter with boiling 2‐butanone. The conversion of styrene and the yield of isotactic polystyrene (IY) were influenced by the [H2O]/[Al(i‐Bu)3] mole ratio and the solvent polarity. The reaction is first order with respect to monome