Styrene/(styrene derivative) and styrene/(1-alkene) copolymerization using Ph 2Zn-additive initiator systems

Rabagliati F.M.; Cancino R.A.; Perez, M. A.; Rodríguez, F.J

Keywords: zinc, polymers, size, polymerization, styrene, polymer, copolymerization, diphenylzinc, paper, monomer, drug, molecular, polystyrene, monomers, catalyst, stereospecificity, titanocene, thermography, zirconocene, syndiotactic, derivative, conference, unclassified, Zirconocenes

Abstract

Diphenylzinc-metallocene-MAO initiator systems have proven to be effective initiator systems for styrene and for substituted styrenes as well as for their styrene/(styrene-derivative) Copolymerization. Titanocene produced almost pure syndiotactic polymers while zirconocenes gave atactic polystyrene together with a low content, less than 20%, of syndiotactic polystyrene. Systems including a zirconocene, particularly ethenyl(bisindenyl)zirconium dichloride were effective initiators of 1-alkene polymerization and of styrène/1-alkene copolymerization. Conversion to polymer increases with the molecular size of 1-alkene. Styrene derivative and styrene/(styrene derivative) polymerization was greatly influenced by the inductive effect of substituent and by steric hindrance due to the monomer.

Más información

Título de la Revista: MACROMOLECULAR SYMPOSIA
Volumen: 216
Editorial: WILEY-V C H VERLAG GMBH
Fecha de publicación: 2004
Página de inicio: 55
Página final: 64
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-8444242200&partnerID=q2rCbXpz