Polymerization of ethylene using metallocene and aluminoxane systems

Detalhes bibliográficos
Autor(a) principal: Justino, Jorge
Data de Publicação: 1997
Outros Autores: Dias, A.R., Ascenso, J., Marques, M.M., Tait, P.J.T.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.15/4378
Resumo: This paper describes ethylene polymerization using a number of metal-locene and aluminoxane catalyst systems, Cp2MR2 and methylaluminoxane [M = Zr, W, Nb; R = Cl, CH3]. Two types of methylaluminoxane, MAO (1) and MAO (2), were used as cocatalysts. The polymerization activities of the complexes Cp2WCl2 and Cp2NbCl2 were compared with that of Cp2ZrCl2. The Nb and W complexes were found to be less active than the Zr complex. Polyethylene characterization was also carried out by the following methods: gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR).
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spelling Polymerization of ethylene using metallocene and aluminoxane systemsmetallocenealuminoxanesZiegler-Natta catalysisethylene polymerizationactive centresThis paper describes ethylene polymerization using a number of metal-locene and aluminoxane catalyst systems, Cp2MR2 and methylaluminoxane [M = Zr, W, Nb; R = Cl, CH3]. Two types of methylaluminoxane, MAO (1) and MAO (2), were used as cocatalysts. The polymerization activities of the complexes Cp2WCl2 and Cp2NbCl2 were compared with that of Cp2ZrCl2. The Nb and W complexes were found to be less active than the Zr complex. Polyethylene characterization was also carried out by the following methods: gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR).WileyRepositório Científico do Instituto Politécnico de SantarémJustino, JorgeDias, A.R.Ascenso, J.Marques, M.M.Tait, P.J.T.2023-04-04T14:57:44Z19971997-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.15/4378engJustino, J.; Dias, A.R.; Ascenso, J.; Marques, M.M. & Tait, P.J.T. (1997). Polymerization of ethylene using metallocene and aluminoxane systems. Polymer International, 44(4): 407-412. https://doi.org/10.1002/(SICI)1097-0126(199712)44:4<407::AID-PI844>3.0.CO;2-1https://doi.org/10.1002/(SICI)1097-0126(199712)44:4<407::AID-PI844>3.0.CO;2-11097-0126info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-21T07:37:47Zoai:repositorio.ipsantarem.pt:10400.15/4378Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:56:01.154631Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Polymerization of ethylene using metallocene and aluminoxane systems
title Polymerization of ethylene using metallocene and aluminoxane systems
spellingShingle Polymerization of ethylene using metallocene and aluminoxane systems
Justino, Jorge
metallocene
aluminoxanes
Ziegler-Natta catalysis
ethylene polymerization
active centres
title_short Polymerization of ethylene using metallocene and aluminoxane systems
title_full Polymerization of ethylene using metallocene and aluminoxane systems
title_fullStr Polymerization of ethylene using metallocene and aluminoxane systems
title_full_unstemmed Polymerization of ethylene using metallocene and aluminoxane systems
title_sort Polymerization of ethylene using metallocene and aluminoxane systems
author Justino, Jorge
author_facet Justino, Jorge
Dias, A.R.
Ascenso, J.
Marques, M.M.
Tait, P.J.T.
author_role author
author2 Dias, A.R.
Ascenso, J.
Marques, M.M.
Tait, P.J.T.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico de Santarém
dc.contributor.author.fl_str_mv Justino, Jorge
Dias, A.R.
Ascenso, J.
Marques, M.M.
Tait, P.J.T.
dc.subject.por.fl_str_mv metallocene
aluminoxanes
Ziegler-Natta catalysis
ethylene polymerization
active centres
topic metallocene
aluminoxanes
Ziegler-Natta catalysis
ethylene polymerization
active centres
description This paper describes ethylene polymerization using a number of metal-locene and aluminoxane catalyst systems, Cp2MR2 and methylaluminoxane [M = Zr, W, Nb; R = Cl, CH3]. Two types of methylaluminoxane, MAO (1) and MAO (2), were used as cocatalysts. The polymerization activities of the complexes Cp2WCl2 and Cp2NbCl2 were compared with that of Cp2ZrCl2. The Nb and W complexes were found to be less active than the Zr complex. Polyethylene characterization was also carried out by the following methods: gel permeation chromatography (GPC), differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR).
publishDate 1997
dc.date.none.fl_str_mv 1997
1997-01-01T00:00:00Z
2023-04-04T14:57:44Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.15/4378
url http://hdl.handle.net/10400.15/4378
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Justino, J.; Dias, A.R.; Ascenso, J.; Marques, M.M. & Tait, P.J.T. (1997). Polymerization of ethylene using metallocene and aluminoxane systems. Polymer International, 44(4): 407-412. https://doi.org/10.1002/(SICI)1097-0126(199712)44:4<407::AID-PI844>3.0.CO;2-1
https://doi.org/10.1002/(SICI)1097-0126(199712)44:4<407::AID-PI844>3.0.CO;2-1
1097-0126
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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