Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration
Autor(a) principal: | |
---|---|
Data de Publicação: | 2001 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/86925 |
Resumo: | The evolution of the structure of polyolefins with different ethene/propene ratios in the absence or in presence of peroxide was monitored along a twin screw extruder. Small samples were quickly collected from the melt at specific barrel locations and characterized by theological measurements. The rheological properties of the polyolefins are hardly affected when processing is carried out in the absence of peroxide. In the presence of peroxide both branching/crosslinking and degradation occur along the extruder, until the peroxide is fully converted. The degree of branching/crosslinking and/or degradation depends on the ethene/propene ratio, on the original molecular weight of the polymer and on the amount of peroxide added. (C) 2001 John Wiley & Sons, Inc. |
id |
RCAP_47ef3241447b4cc280decbbc4199c6da |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/86925 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentrationprocessingdegradationcrosslinkingbranching and rheologyEngenharia e Tecnologia::Outras Engenharias e TecnologiasScience & TechnologyThe evolution of the structure of polyolefins with different ethene/propene ratios in the absence or in presence of peroxide was monitored along a twin screw extruder. Small samples were quickly collected from the melt at specific barrel locations and characterized by theological measurements. The rheological properties of the polyolefins are hardly affected when processing is carried out in the absence of peroxide. In the presence of peroxide both branching/crosslinking and degradation occur along the extruder, until the peroxide is fully converted. The degree of branching/crosslinking and/or degradation depends on the ethene/propene ratio, on the original molecular weight of the polymer and on the amount of peroxide added. (C) 2001 John Wiley & Sons, Inc.- (undefined)John Wiley & Sons IncUniversidade do MinhoMachado, A. V.Covas, J. A.Van Duin, M2001-072001-07-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/86925engMachado, A. V., Covas, J. A., & Van Duin, M. (2001). Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration. Journal of Applied Polymer Science. Wiley. http://doi.org/10.1002/app.14130021-89951097-462810.1002/app.1413https://onlinelibrary.wiley.com/doi/10.1002/app.1413info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-21T01:27:09Zoai:repositorium.sdum.uminho.pt:1822/86925Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:39:04.470075Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
title |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
spellingShingle |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration Machado, A. V. processing degradation crosslinking branching and rheology Engenharia e Tecnologia::Outras Engenharias e Tecnologias Science & Technology |
title_short |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
title_full |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
title_fullStr |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
title_full_unstemmed |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
title_sort |
Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration |
author |
Machado, A. V. |
author_facet |
Machado, A. V. Covas, J. A. Van Duin, M |
author_role |
author |
author2 |
Covas, J. A. Van Duin, M |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Machado, A. V. Covas, J. A. Van Duin, M |
dc.subject.por.fl_str_mv |
processing degradation crosslinking branching and rheology Engenharia e Tecnologia::Outras Engenharias e Tecnologias Science & Technology |
topic |
processing degradation crosslinking branching and rheology Engenharia e Tecnologia::Outras Engenharias e Tecnologias Science & Technology |
description |
The evolution of the structure of polyolefins with different ethene/propene ratios in the absence or in presence of peroxide was monitored along a twin screw extruder. Small samples were quickly collected from the melt at specific barrel locations and characterized by theological measurements. The rheological properties of the polyolefins are hardly affected when processing is carried out in the absence of peroxide. In the presence of peroxide both branching/crosslinking and degradation occur along the extruder, until the peroxide is fully converted. The degree of branching/crosslinking and/or degradation depends on the ethene/propene ratio, on the original molecular weight of the polymer and on the amount of peroxide added. (C) 2001 John Wiley & Sons, Inc. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-07 2001-07-01T00:00:00Z |
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 |
https://hdl.handle.net/1822/86925 |
url |
https://hdl.handle.net/1822/86925 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Machado, A. V., Covas, J. A., & Van Duin, M. (2001). Monitoring polyolefin modification along the axis of a twin screw extruder. I. Effect of peroxide concentration. Journal of Applied Polymer Science. Wiley. http://doi.org/10.1002/app.1413 0021-8995 1097-4628 10.1002/app.1413 https://onlinelibrary.wiley.com/doi/10.1002/app.1413 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799133651474055168 |