LI Bogeng, YU Bo, FAN Rong, et al. Particle morphology of syndiotactic polystyrene prepared with homogeneous metallocene catalyst[J]. CIESC Journal, 2006, (8).
LI Bogeng, YU Bo, FAN Rong, et al. Particle morphology of syndiotactic polystyrene prepared with homogeneous metallocene catalyst[J]. CIESC Journal, 2006, (8).DOI:
Syndiotactic polystyrene (sPS) was prepared by bulk polymerization with homogeneous metallocene catalystic system
Cp*Ti(OPh)3 or Cp*Ti(OPhOMe)3/MAO/TIBA.It was found that a fast crystallization of the produced sPS is very important to avoid gelation of the polymerizing mixture and prepare powdery product.But
it was due to crystallization nucleation mechanism that the morphology of produced particles was very irregular and extraordinarily difficult to manipulate.Adding a little sPS seed during polymerization did not improve particle morphology.However
regular particles with good morphology could be simply prepared by adding a little other polymer.When the added polymer (e.g. mEPDM) was immiscible with the amorphous sPS