An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization

Detalhes bibliográficos
Autor(a) principal: Pontes, Karen Valverde
Data de Publicação: 2008
Outros Autores: Maciel, Rubens, Embiruçu, Marcelo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/13969
Resumo: Texto completo: acesso restrito. p. 2176-2186
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spelling Pontes, Karen ValverdeMaciel, RubensEmbiruçu, MarceloPontes, Karen ValverdeMaciel, RubensEmbiruçu, Marcelo2013-11-27T18:17:44Z20080021-8995http://repositorio.ufba.br/ri/handle/ri/13969v. 109, n. 4Texto completo: acesso restrito. p. 2176-2186The objective of this article is to present an approach to ascertain the molecular weight distribution (MWD) of polymeric systems and its application to an industrial polyethylene reactor. Ascertaining the complete MWD can provide more reliable predictions of polymer end-use properties, as some of them may depend on specific molecular weight ranges, instead of solely on the averages of the distribution. The proposed method is based on differentiation of the cumulative MWD, where the accumulated concentrations, evaluated at a finite number of chain lengths, are considered components in a reaction medium. Therefore, the dimension of the mathematical model may be suited to the desired level of detail on the MWD. The ethylene polymerization in solution with Ziegler–Natta catalyst is taken as a case study because of the lack of studies in this field. The reaction takes place in continuously stirred and tubular reactors. The results show the potential of the proposed approach and its usefulness in ascertaining the whole MWD, which in turn can be used to predict the polymer end-use properties.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-11-27T14:27:28Z No. of bitstreams: 1 10.1002-app.28128.pdf: 355394 bytes, checksum: 8f837b851673c4944e585f8846aaba97 (MD5)Approved for entry into archive by LIVIA FREITAS (livia.freitas@ufba.br) on 2013-11-27T18:17:44Z (GMT) No. of bitstreams: 1 10.1002-app.28128.pdf: 355394 bytes, checksum: 8f837b851673c4944e585f8846aaba97 (MD5)Made available in DSpace on 2013-11-27T18:17:44Z (GMT). No. of bitstreams: 1 10.1002-app.28128.pdf: 355394 bytes, checksum: 8f837b851673c4944e585f8846aaba97 (MD5) Previous issue date: 2008http://dx.doi.org/10.1002/app.28128reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAComputer modelingSimulationsZiegler–Natta polymerizationPolymerizationMolecular weight distributionAn approach for complete molecular weight distribution calculation: application in ethylene coordination polymerizationJournal of Applied Polymer Scienceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL10.1002-app.28128.pdf10.1002-app.28128.pdfapplication/pdf355394https://repositorio.ufba.br/bitstream/ri/13969/1/10.1002-app.28128.pdf8f837b851673c4944e585f8846aaba97MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/13969/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXT10.1002-app.28128.pdf.txt10.1002-app.28128.pdf.txtExtracted texttext/plain34677https://repositorio.ufba.br/bitstream/ri/13969/3/10.1002-app.28128.pdf.txt69982ea20509569fe615d944d196a8afMD53ri/139692022-07-05 14:04:14.599oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:04:14Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
dc.title.alternative.pt_BR.fl_str_mv Journal of Applied Polymer Science
title An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
spellingShingle An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
Pontes, Karen Valverde
Computer modeling
Simulations
Ziegler–Natta polymerization
Polymerization
Molecular weight distribution
title_short An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
title_full An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
title_fullStr An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
title_full_unstemmed An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
title_sort An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
author Pontes, Karen Valverde
author_facet Pontes, Karen Valverde
Maciel, Rubens
Embiruçu, Marcelo
author_role author
author2 Maciel, Rubens
Embiruçu, Marcelo
author2_role author
author
dc.contributor.author.fl_str_mv Pontes, Karen Valverde
Maciel, Rubens
Embiruçu, Marcelo
Pontes, Karen Valverde
Maciel, Rubens
Embiruçu, Marcelo
dc.subject.por.fl_str_mv Computer modeling
Simulations
Ziegler–Natta polymerization
Polymerization
Molecular weight distribution
topic Computer modeling
Simulations
Ziegler–Natta polymerization
Polymerization
Molecular weight distribution
description Texto completo: acesso restrito. p. 2176-2186
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2013-11-27T18:17:44Z
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://repositorio.ufba.br/ri/handle/ri/13969
dc.identifier.issn.none.fl_str_mv 0021-8995
dc.identifier.number.pt_BR.fl_str_mv v. 109, n. 4
identifier_str_mv 0021-8995
v. 109, n. 4
url http://repositorio.ufba.br/ri/handle/ri/13969
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1002/app.28128
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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