An approach for complete molecular weight distribution calculation: application in ethylene coordination polymerization
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
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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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:ri/13969VGVybW8gZGUgTGljZW7vv71hLCBu77+9byBleGNsdXNpdm8sIHBhcmEgbyBkZXDvv71zaXRvIG5vIFJlcG9zaXTvv71yaW8gSW5zdGl0dWNpb25hbCBkYSBVRkJBLgoKIFBlbG8gcHJvY2Vzc28gZGUgc3VibWlzc++/vW8gZGUgZG9jdW1lbnRvcywgbyBhdXRvciBvdSBzZXUgcmVwcmVzZW50YW50ZSBsZWdhbCwgYW8gYWNlaXRhciAKZXNzZSB0ZXJtbyBkZSBsaWNlbu+/vWEsIGNvbmNlZGUgYW8gUmVwb3NpdO+/vXJpbyBJbnN0aXR1Y2lvbmFsIGRhIFVuaXZlcnNpZGFkZSBGZWRlcmFsIGRhIEJhaGlhIApvIGRpcmVpdG8gZGUgbWFudGVyIHVtYSBj77+9cGlhIGVtIHNldSByZXBvc2l077+9cmlvIGNvbSBhIGZpbmFsaWRhZGUsIHByaW1laXJhLCBkZSBwcmVzZXJ2Ye+/ve+/vW8uIApFc3NlcyB0ZXJtb3MsIG7vv71vIGV4Y2x1c2l2b3MsIG1hbnTvv71tIG9zIGRpcmVpdG9zIGRlIGF1dG9yL2NvcHlyaWdodCwgbWFzIGVudGVuZGUgbyBkb2N1bWVudG8gCmNvbW8gcGFydGUgZG8gYWNlcnZvIGludGVsZWN0dWFsIGRlc3NhIFVuaXZlcnNpZGFkZS4KCiBQYXJhIG9zIGRvY3VtZW50b3MgcHVibGljYWRvcyBjb20gcmVwYXNzZSBkZSBkaXJlaXRvcyBkZSBkaXN0cmlidWnvv73vv71vLCBlc3NlIHRlcm1vIGRlIGxpY2Vu77+9YSAKZW50ZW5kZSBxdWU6CgogTWFudGVuZG8gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIHJlcGFzc2Fkb3MgYSB0ZXJjZWlyb3MsIGVtIGNhc28gZGUgcHVibGljYe+/ve+/vWVzLCBvIHJlcG9zaXTvv71yaW8KcG9kZSByZXN0cmluZ2lyIG8gYWNlc3NvIGFvIHRleHRvIGludGVncmFsLCBtYXMgbGliZXJhIGFzIGluZm9ybWHvv73vv71lcyBzb2JyZSBvIGRvY3VtZW50bwooTWV0YWRhZG9zIGVzY3JpdGl2b3MpLgoKIERlc3RhIGZvcm1hLCBhdGVuZGVuZG8gYW9zIGFuc2Vpb3MgZGVzc2EgdW5pdmVyc2lkYWRlIGVtIG1hbnRlciBzdWEgcHJvZHXvv73vv71vIGNpZW5077+9ZmljYSBjb20gCmFzIHJlc3Ryae+/ve+/vWVzIGltcG9zdGFzIHBlbG9zIGVkaXRvcmVzIGRlIHBlcmnvv71kaWNvcy4KCiBQYXJhIGFzIHB1YmxpY2Hvv73vv71lcyBzZW0gaW5pY2lhdGl2YXMgcXVlIHNlZ3VlbSBhIHBvbO+/vXRpY2EgZGUgQWNlc3NvIEFiZXJ0bywgb3MgZGVw77+9c2l0b3MgCmNvbXB1bHPvv71yaW9zIG5lc3NlIHJlcG9zaXTvv71yaW8gbWFudO+/vW0gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIG1hcyBtYW5077+9bSBhY2Vzc28gaXJyZXN0cml0byAKYW8gbWV0YWRhZG9zIGUgdGV4dG8gY29tcGxldG8uIEFzc2ltLCBhIGFjZWl0Ye+/ve+/vW8gZGVzc2UgdGVybW8gbu+/vW8gbmVjZXNzaXRhIGRlIGNvbnNlbnRpbWVudG8KIHBvciBwYXJ0ZSBkZSBhdXRvcmVzL2RldGVudG9yZXMgZG9zIGRpcmVpdG9zLCBwb3IgZXN0YXJlbSBlbSBpbmljaWF0aXZhcyBkZSBhY2Vzc28gYWJlcnRvLgo=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 |
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openAccess |
dc.source.pt_BR.fl_str_mv |
http://dx.doi.org/10.1002/app.28128 |
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