Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow

Detalhes bibliográficos
Autor(a) principal: Esperidião, Maria Cecília Azevedo
Data de Publicação: 2003
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14139
Resumo: Texto completo: acesso restrito. p. 5819-5826
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spelling Esperidião, Maria Cecília AzevedoEsperidião, Maria Cecília Azevedo2013-12-13T12:16:51Z20030888-5885http://repositorio.ufba.br/ri/handle/ri/14139v. 42, n. 3Texto completo: acesso restrito. p. 5819-5826Polymer−surface interactions in flowing systems were studied using an attenuated total reflectance Fourier transform infrared spectroscopy technique. The absorbance of deuterated polyethylene, d-PE66 (Mw = 6.60 × 104) and d-PE112 (Mw = 1.12 × 105), near the surface of a flat zinc selenide crystal was followed as it was replaced by linear low-density polyethylene (Mw = 1.07 × 105). The experiments were performed under wall stresses of 0.090, 0.134, and 0.155 MPa using a rectangular flow channel formed by a ZnSe crystal and an aluminum block. The decay profiles depended on the molecular weight distribution, the chemical composition distribution, and the shear stress. For d-PE112, the decay profiles suggest that slip is due to a cohesive failure. For d-PE66, the slip mechanism appeared to be due to adhesive failure. For d-PE112 with larger and regular chains, an immobile layer forms whose thickness (12−17 nm) depended on the wall shear stress.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-12-13T12:16:51Z No. of bitstreams: 1 Maria Cecilia A. Esperidia.pdf: 141495 bytes, checksum: 30fd324210d29010e77712ddb34a0568 (MD5)Made available in DSpace on 2013-12-13T12:16:51Z (GMT). No. of bitstreams: 1 Maria Cecilia A. Esperidia.pdf: 141495 bytes, checksum: 30fd324210d29010e77712ddb34a0568 (MD5) Previous issue date: 2003http://dx.doi.org/ 10.1021/ie030106dreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAChain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene FlowIndustrial and Engineering Chemistry Researchinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALMaria Cecilia A. Esperidia.pdfMaria Cecilia A. Esperidia.pdfapplication/pdf141495https://repositorio.ufba.br/bitstream/ri/14139/1/Maria%20Cecilia%20A.%20Esperidia.pdf30fd324210d29010e77712ddb34a0568MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14139/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTMaria Cecilia A. Esperidia.pdf.txtMaria Cecilia A. Esperidia.pdf.txtExtracted texttext/plain39606https://repositorio.ufba.br/bitstream/ri/14139/3/Maria%20Cecilia%20A.%20Esperidia.pdf.txt2cd18422a4e54101d470ca0665b0fcbeMD53ri/141392022-07-12 11:18:38.032oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-12T14:18:38Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
dc.title.alternative.pt_BR.fl_str_mv Industrial and Engineering Chemistry Research
title Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
spellingShingle Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
Esperidião, Maria Cecília Azevedo
title_short Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
title_full Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
title_fullStr Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
title_full_unstemmed Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
title_sort Chain-Exchange Dynamics at a Polymer−Solid Interface:  effects of Polydispersity and Shear Stress on Linear Low-Density Polyethylene Flow
author Esperidião, Maria Cecília Azevedo
author_facet Esperidião, Maria Cecília Azevedo
author_role author
dc.contributor.author.fl_str_mv Esperidião, Maria Cecília Azevedo
Esperidião, Maria Cecília Azevedo
description Texto completo: acesso restrito. p. 5819-5826
publishDate 2003
dc.date.issued.fl_str_mv 2003
dc.date.accessioned.fl_str_mv 2013-12-13T12:16:51Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/14139
dc.identifier.issn.none.fl_str_mv 0888-5885
dc.identifier.number.pt_BR.fl_str_mv v. 42, n. 3
identifier_str_mv 0888-5885
v. 42, n. 3
url http://repositorio.ufba.br/ri/handle/ri/14139
dc.language.iso.fl_str_mv eng
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.pt_BR.fl_str_mv http://dx.doi.org/ 10.1021/ie030106d
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