Styrene/1-alkene copolymerization by CpTiCl 3-additive initiator systems

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

Keywords: solubility, polymerization, styrene, resonance, nuclear, aluminum, copolymer, drug, heating, article, methylaluminoxane, titanium, magnetic, differential, calorimetry, scanning, derivative, unclassified, trichloride, alkene, cyclopentadienyltitanium, ethylaluminum, dichloride

Abstract

Initiator systems resulting from the combination of cyclopentadienyltitanium trichloride (CpTiCl 3), ethylaluminium dichloride (EtAlCl 2) with and without methylaluminoxane (MAO), were used to initiate styrene (S) homopolymerization and S/1-alkene copolymerization. The CpTiCl 3-EtAlCl 2 system turned out to be an effective initiator of styrene homopolymerization as well as of styrene/1-decene (S/1-C 10H 20) and styrene/1-hexadecene (S/1-C 16H 32) copolymerization. Both S/1-C 10H 20 and S/1-C 16H 32 copolymers obtained from various S/1-alkene molar ratios in the initial feed contained variable amounts of boiling-butanone-insoluble product which was a S/1-alkene copolymer according to NMR and DSC analyses. The copolymers obtained showed Tg values which decrease as the proportion of 1-alkene in the initial feed increases.

Más información

Título de la Revista: Journal of the Chilean Chemical Society
Volumen: 50
Número: 1
Editorial: SOC CHILENA QUIMICA
Fecha de publicación: 2005
Página de inicio: 427
Página final: 430
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-15944413164&partnerID=q2rCbXpz