Title: Synthesis and characterization of copolymers of ethylene and 1-octadecene using the rac-Et(Ind)2ZrCl2/MAO catalyst system
Abstract: Macromolecular Chemistry and PhysicsVolume 200, Issue 6 p. 1306-1310 Research Article Synthesis and characterization of copolymers of ethylene and 1-octadecene using the rac-Et(Ind)2ZrCl2/MAO catalyst system Raúl Quijada, Raúl QuijadaSearch for more papers by this authorAna Narváez, Ana Narváez Departamento de Ingeniería Química, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, ChileSearch for more papers by this authorRené Rojas, René Rojas Departamento de Ingeniería Química, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, ChileSearch for more papers by this authorFranco M. Rabagliati, Franco M. Rabagliati Departamento de Ciencias Químicas, Facultad de Química y Biología, Universidad de Santiago, Santiago, ChileSearch for more papers by this authorGriselda Barrera Galland, Griselda Barrera Galland Instituto de Química – Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500-90540 Porto Alegre – RS – BrasilSearch for more papers by this authorRaquel Santos Mauler, Raquel Santos Mauler Instituto de Química – Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500-90540 Porto Alegre – RS – BrasilSearch for more papers by this authorRosario Benavente, Rosario Benavente Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this authorErnesto Pérez, Ernesto Pérez Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this authorJosé M. Pereña, José M. Pereña Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this authorAntonio Bello, Antonio Bello Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this author Raúl Quijada, Raúl QuijadaSearch for more papers by this authorAna Narváez, Ana Narváez Departamento de Ingeniería Química, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, ChileSearch for more papers by this authorRené Rojas, René Rojas Departamento de Ingeniería Química, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, ChileSearch for more papers by this authorFranco M. Rabagliati, Franco M. Rabagliati Departamento de Ciencias Químicas, Facultad de Química y Biología, Universidad de Santiago, Santiago, ChileSearch for more papers by this authorGriselda Barrera Galland, Griselda Barrera Galland Instituto de Química – Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500-90540 Porto Alegre – RS – BrasilSearch for more papers by this authorRaquel Santos Mauler, Raquel Santos Mauler Instituto de Química – Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500-90540 Porto Alegre – RS – BrasilSearch for more papers by this authorRosario Benavente, Rosario Benavente Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this authorErnesto Pérez, Ernesto Pérez Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this authorJosé M. Pereña, José M. Pereña Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this authorAntonio Bello, Antonio Bello Instituto de Ciencia y Tecnología de Polímeros (CSIC), Juan de la Cierva 3, 28006-Madrid, EspañaSearch for more papers by this author First published: 19 May 1999 https://doi.org/10.1002/(SICI)1521-3935(19990601)200:6<1306::AID-MACP1306>3.0.CO;2-4Citations: 43AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract The copolymerization of ethylene and 1-octadecene using a bridged metallocene was studied in order to observe the effect of the comonomer on the catalytic activity. A noticeable increase in activity is seen as the concentration of 1-octadecene in the reaction medium increases. 13C NMR analysis shows 6.4 mol-% incorporation of comonomer at the highest 1-octadecene concentration in the feed used here. The molecular weight of the copolymers shows a drastic decrease that may be attributed to chain termination by transfer or β-elimination of the comonomer. As to the molecular weight distribution, it remains within a narrow range, as expected with metallocene catalysts. The melting temperature and the enthalpy of melting of the copolymers show a decrease with increasing comonomer content. As usual for ethylene copolymers, the X-ray crystallinities are higher than those determined from the enthalpy of melting. Citing Literature Volume200, Issue6June 1999Pages 1306-1310 RelatedInformation
Publication Year: 1999
Publication Date: 1999-06-01
Language: en
Type: article
Indexed In: ['crossref']
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