Copolymerization of ethylene with styrene has been recently achieved using a variety of homogeneous Ziegler-Natta catalysts.1 The presence of a tertiary carbon atom in the styrene units of these copolymers makes stereoregularity possible, but in most of those copolymers previously described the stereoregularity, if present, was not satisfactorily defined. Kakugo et al.1b and, more recently, some of us2 reported the synthesis of stereoregular, possibly isotactic, ethylene-styrene copolymers. At high styrene content these macromolecules show an alternating structure, due to the absence of styrenestyrene sequences.2 The X-ray spectra of these high styrene content, crystalline copolymers exhibit patterns which are different from those of polyethylene and polystyrene.1b,2 In this paper ethylene-styrene copolymers obtained with stereospecific and nonstereospecific catalysts are compared with respect to their crystallization behavior.

Ethylene-styrene copolymers by ansa-zirconocene- and half-titanocene-based catalysts: Composition, stereoregularity, and crystallinity

Izzo, L.;
1998-01-01

Abstract

Copolymerization of ethylene with styrene has been recently achieved using a variety of homogeneous Ziegler-Natta catalysts.1 The presence of a tertiary carbon atom in the styrene units of these copolymers makes stereoregularity possible, but in most of those copolymers previously described the stereoregularity, if present, was not satisfactorily defined. Kakugo et al.1b and, more recently, some of us2 reported the synthesis of stereoregular, possibly isotactic, ethylene-styrene copolymers. At high styrene content these macromolecules show an alternating structure, due to the absence of styrenestyrene sequences.2 The X-ray spectra of these high styrene content, crystalline copolymers exhibit patterns which are different from those of polyethylene and polystyrene.1b,2 In this paper ethylene-styrene copolymers obtained with stereospecific and nonstereospecific catalysts are compared with respect to their crystallization behavior.
1998
https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032098964&partnerID=40&md5=8a1e2c8d0d68c967a61c0ef1881a57b8
Venditto, V.; De Tullio, G.; Izzo, L.; Oliva, L.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2066486
 Attenzione

L'Ateneo sottopone a validazione solo i file PDF allegati

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 30
  • ???jsp.display-item.citation.isi??? 30
social impact