Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching

Detalhes bibliográficos
Autor(a) principal: Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida
Data de Publicação: 2005
Outros Autores: Musse, Ana Paula Santana, Castro, Martha Teresa Pantoja de Oliveira, Gonçalves, Cristiane Carla, Watanabe, Yuji Nascimento
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6672
Resumo: Trabalho completo: acesso restrito, p. 201–208
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spelling Quintella, Cristina Maria Assis Lopes Tavares da Mata HermidaMusse, Ana Paula SantanaCastro, Martha Teresa Pantoja de OliveiraGonçalves, Cristiane CarlaWatanabe, Yuji NascimentoQuintella, Cristina Maria Assis Lopes Tavares da Mata HermidaMusse, Ana Paula SantanaCastro, Martha Teresa Pantoja de OliveiraGonçalves, Cristiane CarlaWatanabe, Yuji Nascimento2012-08-31T19:01:36Z2005-01-010021-9797http://www.repositorio.ufba.br/ri/handle/ri/6672v. 281, n. 1Trabalho completo: acesso restrito, p. 201–208This work was concerned with the dependence of the interfacial tension (ΓSL) on surface degree of oxygen content and on polymer branching degree. The static ΓSL was evaluated by contact angle (θc) and the dynamic ΓSL by fluorescence depolarization of molecular probes seeded in induced flows of monoethylene glycol. The latter results were interpreted using statistical covariant analysis. Two different systems of flowing films were studied: free films flowing on the surfaces on which they impinge and films flowing inside 1-mm-thick microflow cells. The solid surfaces were polyethylene of low density, medium density, high density, and linear with low density, polypropylene, vinyl acetate co-polymer with oxygen content of 15% and 28%, borosilicate, and tin dioxide. Increase in oxygen content of the surface decreased both the static and the dynamic ΓSL, which demonstrated that the presence of oxygen atoms hindered wetting. Only the dynamical ΓSL was sensitive to polymer branching, and it increased as branching degree decreased. This was attributed to the higher hydrogen-atom density at the surface, which favored temporary intermolecular bonds between the surface and the flowing liquid.Submitted by Bruna Lessa (lessbruna@gmail.com) on 2012-08-31T19:01:36Z No. of bitstreams: 1 (183).pdf: 371831 bytes, checksum: 7eae9ece1dd4f13ec39e763a0689a7f9 (MD5)Made available in DSpace on 2012-08-31T19:01:36Z (GMT). No. of bitstreams: 1 (183).pdf: 371831 bytes, checksum: 7eae9ece1dd4f13ec39e763a0689a7f9 (MD5) Previous issue date: 2005-01-01Elsevierhttp://dx.doi.org/10.1016/j.jcis.2004.08.085reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAFluid microdynamicsIntermolecular forcesPLFDynamic interactionsAdhesionDragObservation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branchingJournal of Colloid and Interface Scienceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL(183).pdf(183).pdfapplication/pdf371831https://repositorio.ufba.br/bitstream/ri/6672/1/%28183%29.pdf7eae9ece1dd4f13ec39e763a0689a7f9MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/6672/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT(183).pdf.txt(183).pdf.txtExtracted texttext/plain30499https://repositorio.ufba.br/bitstream/ri/6672/3/%28183%29.pdf.txt728fb6ae202317996772bbbc5f6f827aMD53ri/66722022-07-05 14:03:31.168oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:31Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
dc.title.alternative.pt_BR.fl_str_mv Journal of Colloid and Interface Science
title Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
spellingShingle Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida
Fluid microdynamics
Intermolecular forces
PLF
Dynamic interactions
Adhesion
Drag
title_short Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
title_full Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
title_fullStr Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
title_full_unstemmed Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
title_sort Observation of wall wettability under imposed flow by fluorescence depolarization: dependence on surface oxygen content and degree of polymer branching
author Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida
author_facet Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida
Musse, Ana Paula Santana
Castro, Martha Teresa Pantoja de Oliveira
Gonçalves, Cristiane Carla
Watanabe, Yuji Nascimento
author_role author
author2 Musse, Ana Paula Santana
Castro, Martha Teresa Pantoja de Oliveira
Gonçalves, Cristiane Carla
Watanabe, Yuji Nascimento
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida
Musse, Ana Paula Santana
Castro, Martha Teresa Pantoja de Oliveira
Gonçalves, Cristiane Carla
Watanabe, Yuji Nascimento
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida
Musse, Ana Paula Santana
Castro, Martha Teresa Pantoja de Oliveira
Gonçalves, Cristiane Carla
Watanabe, Yuji Nascimento
dc.subject.por.fl_str_mv Fluid microdynamics
Intermolecular forces
PLF
Dynamic interactions
Adhesion
Drag
topic Fluid microdynamics
Intermolecular forces
PLF
Dynamic interactions
Adhesion
Drag
description Trabalho completo: acesso restrito, p. 201–208
publishDate 2005
dc.date.issued.fl_str_mv 2005-01-01
dc.date.accessioned.fl_str_mv 2012-08-31T19:01:36Z
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://www.repositorio.ufba.br/ri/handle/ri/6672
dc.identifier.issn.none.fl_str_mv 0021-9797
dc.identifier.number.pt_BR.fl_str_mv v. 281, n. 1
identifier_str_mv 0021-9797
v. 281, n. 1
url http://www.repositorio.ufba.br/ri/handle/ri/6672
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.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.jcis.2004.08.085
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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