The effect of oxygen on the irradiation process of ethylene-butene copolymer

Autores
Failla, Marcelo Daniel; Brandolin, Adriana; Sarmoria, Claudia; Valles, Enrique Marcelo
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A model ethylene-butene copolymer of narrow molecular weight distribution was irradiated with γ-rays under different oxygen-containing atmospheres. Gel fraction, carbonyl content and molecular weights were measured. Weight average molecular weights have been measured for all pregel samples and for the sol fraction of the postgel samples. Two different regimes seem to be present. Early on, molecular weight decreases with irradiation dose. At a later stage, further irradiation leads to a molecular weight increase. The dose at which this change of regime takes place varies with the oxygen concentration in the processing atmosphere. We have modeled this process assuming that oxygen is consumed at the early stages of irradiation, and that the variable that triggers the difference in response is the presence or absence of oxygen. Good agreement with measured values is found using either a probability model or a kinetic model.
Fil: Failla, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Brandolin, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Sarmoria, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Valles, Enrique Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Materia
Gamma Irradiation
Mathematical Model
Oxygen
Polyethylene
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:11336/55525
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The effect of oxygen on the irradiation process of ethylene-butene copolymerFailla, Marcelo DanielBrandolin, AdrianaSarmoria, ClaudiaValles, Enrique MarceloGamma IrradiationMathematical ModelOxygenPolyethylenehttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2A model ethylene-butene copolymer of narrow molecular weight distribution was irradiated with γ-rays under different oxygen-containing atmospheres. Gel fraction, carbonyl content and molecular weights were measured. Weight average molecular weights have been measured for all pregel samples and for the sol fraction of the postgel samples. Two different regimes seem to be present. Early on, molecular weight decreases with irradiation dose. At a later stage, further irradiation leads to a molecular weight increase. The dose at which this change of regime takes place varies with the oxygen concentration in the processing atmosphere. We have modeled this process assuming that oxygen is consumed at the early stages of irradiation, and that the variable that triggers the difference in response is the presence or absence of oxygen. Good agreement with measured values is found using either a probability model or a kinetic model.Fil: Failla, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Brandolin, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Sarmoria, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Valles, Enrique Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaElsevier2012-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55525Failla, Marcelo Daniel; Brandolin, Adriana; Sarmoria, Claudia; Valles, Enrique Marcelo; The effect of oxygen on the irradiation process of ethylene-butene copolymer; Elsevier; Polymer Degradation And Stability; 97; 8; 8-2012; 1485-14940141-3910CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.polymdegradstab.2012.05.004info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0141391012001693info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:48:07Zoai:ri.conicet.gov.ar:11336/55525instacron: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:34982025-11-12 09:48:08.136CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The effect of oxygen on the irradiation process of ethylene-butene copolymer
title The effect of oxygen on the irradiation process of ethylene-butene copolymer
spellingShingle The effect of oxygen on the irradiation process of ethylene-butene copolymer
Failla, Marcelo Daniel
Gamma Irradiation
Mathematical Model
Oxygen
Polyethylene
title_short The effect of oxygen on the irradiation process of ethylene-butene copolymer
title_full The effect of oxygen on the irradiation process of ethylene-butene copolymer
title_fullStr The effect of oxygen on the irradiation process of ethylene-butene copolymer
title_full_unstemmed The effect of oxygen on the irradiation process of ethylene-butene copolymer
title_sort The effect of oxygen on the irradiation process of ethylene-butene copolymer
dc.creator.none.fl_str_mv Failla, Marcelo Daniel
Brandolin, Adriana
Sarmoria, Claudia
Valles, Enrique Marcelo
author Failla, Marcelo Daniel
author_facet Failla, Marcelo Daniel
Brandolin, Adriana
Sarmoria, Claudia
Valles, Enrique Marcelo
author_role author
author2 Brandolin, Adriana
Sarmoria, Claudia
Valles, Enrique Marcelo
author2_role author
author
author
dc.subject.none.fl_str_mv Gamma Irradiation
Mathematical Model
Oxygen
Polyethylene
topic Gamma Irradiation
Mathematical Model
Oxygen
Polyethylene
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A model ethylene-butene copolymer of narrow molecular weight distribution was irradiated with γ-rays under different oxygen-containing atmospheres. Gel fraction, carbonyl content and molecular weights were measured. Weight average molecular weights have been measured for all pregel samples and for the sol fraction of the postgel samples. Two different regimes seem to be present. Early on, molecular weight decreases with irradiation dose. At a later stage, further irradiation leads to a molecular weight increase. The dose at which this change of regime takes place varies with the oxygen concentration in the processing atmosphere. We have modeled this process assuming that oxygen is consumed at the early stages of irradiation, and that the variable that triggers the difference in response is the presence or absence of oxygen. Good agreement with measured values is found using either a probability model or a kinetic model.
Fil: Failla, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Brandolin, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Sarmoria, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Valles, Enrique Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
description A model ethylene-butene copolymer of narrow molecular weight distribution was irradiated with γ-rays under different oxygen-containing atmospheres. Gel fraction, carbonyl content and molecular weights were measured. Weight average molecular weights have been measured for all pregel samples and for the sol fraction of the postgel samples. Two different regimes seem to be present. Early on, molecular weight decreases with irradiation dose. At a later stage, further irradiation leads to a molecular weight increase. The dose at which this change of regime takes place varies with the oxygen concentration in the processing atmosphere. We have modeled this process assuming that oxygen is consumed at the early stages of irradiation, and that the variable that triggers the difference in response is the presence or absence of oxygen. Good agreement with measured values is found using either a probability model or a kinetic model.
publishDate 2012
dc.date.none.fl_str_mv 2012-08
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/11336/55525
Failla, Marcelo Daniel; Brandolin, Adriana; Sarmoria, Claudia; Valles, Enrique Marcelo; The effect of oxygen on the irradiation process of ethylene-butene copolymer; Elsevier; Polymer Degradation And Stability; 97; 8; 8-2012; 1485-1494
0141-3910
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55525
identifier_str_mv Failla, Marcelo Daniel; Brandolin, Adriana; Sarmoria, Claudia; Valles, Enrique Marcelo; The effect of oxygen on the irradiation process of ethylene-butene copolymer; Elsevier; Polymer Degradation And Stability; 97; 8; 8-2012; 1485-1494
0141-3910
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.polymdegradstab.2012.05.004
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0141391012001693
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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 13.24909

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