Shear damping function measurements for branched polymers

Autores
Vega, Daniel Alberto; Milner, Scott T.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present results for step-strain experiments and the resulting damping functions of polyethylene blends of different structures, including solutions of linear, star and comb polymers. Remarkably, an entangled melt of combs exhibits a damping function close to that for entangled linear chains. Diluting the combs with faster-relaxing material leads to a more nearly constant damping function. We find similar behavior for blends of commercial low density polyethylene LDPE. Our results suggest a simple picture: on timescales relevant to typical damping-function experiments, the rheologically active portions of our PE combs as well as commercial LDPE are essentially chain backbones. When strongly entangled, these exhibit the Doi-Edwards damping function; when diluted, the damping function tends toward the result for unentangled chains described by the Rouse model - namely, no damping. © 2007 Wiley Periodicals, Inc.
Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. ExxonMobil Research and Engineering; Estados Unidos
Fil: Milner, Scott T.. ExxonMobil Research and Engineering; Estados Unidos
Materia
Branched
Rheology
Star Polymers
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/70601
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Shear damping function measurements for branched polymersVega, Daniel AlbertoMilner, Scott T.BranchedRheologyStar Polymershttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present results for step-strain experiments and the resulting damping functions of polyethylene blends of different structures, including solutions of linear, star and comb polymers. Remarkably, an entangled melt of combs exhibits a damping function close to that for entangled linear chains. Diluting the combs with faster-relaxing material leads to a more nearly constant damping function. We find similar behavior for blends of commercial low density polyethylene LDPE. Our results suggest a simple picture: on timescales relevant to typical damping-function experiments, the rheologically active portions of our PE combs as well as commercial LDPE are essentially chain backbones. When strongly entangled, these exhibit the Doi-Edwards damping function; when diluted, the damping function tends toward the result for unentangled chains described by the Rouse model - namely, no damping. © 2007 Wiley Periodicals, Inc.Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. ExxonMobil Research and Engineering; Estados UnidosFil: Milner, Scott T.. ExxonMobil Research and Engineering; Estados UnidosJohn Wiley & Sons Inc2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/70601Vega, Daniel Alberto; Milner, Scott T.; Shear damping function measurements for branched polymers; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 45; 23; 12-2007; 3117-31360887-6266CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/polb.21276info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.21276info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:24:59Zoai:ri.conicet.gov.ar:11336/70601instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:24:59.983CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Shear damping function measurements for branched polymers
title Shear damping function measurements for branched polymers
spellingShingle Shear damping function measurements for branched polymers
Vega, Daniel Alberto
Branched
Rheology
Star Polymers
title_short Shear damping function measurements for branched polymers
title_full Shear damping function measurements for branched polymers
title_fullStr Shear damping function measurements for branched polymers
title_full_unstemmed Shear damping function measurements for branched polymers
title_sort Shear damping function measurements for branched polymers
dc.creator.none.fl_str_mv Vega, Daniel Alberto
Milner, Scott T.
author Vega, Daniel Alberto
author_facet Vega, Daniel Alberto
Milner, Scott T.
author_role author
author2 Milner, Scott T.
author2_role author
dc.subject.none.fl_str_mv Branched
Rheology
Star Polymers
topic Branched
Rheology
Star Polymers
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present results for step-strain experiments and the resulting damping functions of polyethylene blends of different structures, including solutions of linear, star and comb polymers. Remarkably, an entangled melt of combs exhibits a damping function close to that for entangled linear chains. Diluting the combs with faster-relaxing material leads to a more nearly constant damping function. We find similar behavior for blends of commercial low density polyethylene LDPE. Our results suggest a simple picture: on timescales relevant to typical damping-function experiments, the rheologically active portions of our PE combs as well as commercial LDPE are essentially chain backbones. When strongly entangled, these exhibit the Doi-Edwards damping function; when diluted, the damping function tends toward the result for unentangled chains described by the Rouse model - namely, no damping. © 2007 Wiley Periodicals, Inc.
Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. ExxonMobil Research and Engineering; Estados Unidos
Fil: Milner, Scott T.. ExxonMobil Research and Engineering; Estados Unidos
description We present results for step-strain experiments and the resulting damping functions of polyethylene blends of different structures, including solutions of linear, star and comb polymers. Remarkably, an entangled melt of combs exhibits a damping function close to that for entangled linear chains. Diluting the combs with faster-relaxing material leads to a more nearly constant damping function. We find similar behavior for blends of commercial low density polyethylene LDPE. Our results suggest a simple picture: on timescales relevant to typical damping-function experiments, the rheologically active portions of our PE combs as well as commercial LDPE are essentially chain backbones. When strongly entangled, these exhibit the Doi-Edwards damping function; when diluted, the damping function tends toward the result for unentangled chains described by the Rouse model - namely, no damping. © 2007 Wiley Periodicals, Inc.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/70601
Vega, Daniel Alberto; Milner, Scott T.; Shear damping function measurements for branched polymers; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 45; 23; 12-2007; 3117-3136
0887-6266
CONICET Digital
CONICET
url http://hdl.handle.net/11336/70601
identifier_str_mv Vega, Daniel Alberto; Milner, Scott T.; Shear damping function measurements for branched polymers; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 45; 23; 12-2007; 3117-3136
0887-6266
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/polb.21276
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.21276
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Inc
publisher.none.fl_str_mv John Wiley & Sons Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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