Gamma radiation effect on sisal / polyurethane composites without coupling agents

Detalhes bibliográficos
Autor(a) principal: Vasco,Marina Cardoso
Data de Publicação: 2017
Outros Autores: Claro Neto,Salvador, Nascimento,Eduardo Mauro, Azevedo,Elaine
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Polímeros (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000200165
Resumo: Abstract Natural fibers and polyurethane based composites may present chemical bonding between the components of the polymer and the lignin of the fiber. The incidence of radiation can cause degradation of the polymeric material and alter its mechanical properties. The objective of this study was to obtain and characterize cold pressed composites from polyurethane derived from castor oil and sisal fibers, without coupling agents, through thermogravimetric and mechanical tests, before and after the incidence of 25 kGy dose of gamma radiation. Woven composites that were not irradiated had maximum values of 4.40 GPa for flexural elastic modulus on three point flexural test and dispersed fiber composite that were not irradiated had maximum values of 2.25 GPa. These materials are adequate for use in non-structural applications in radiotherapy and radiodiagnostic rooms.
id ABPO-1_b380a404dd7033e0339fceee08de7775
oai_identifier_str oai:scielo:S0104-14282017000200165
network_acronym_str ABPO-1
network_name_str Polímeros (São Carlos. Online)
repository_id_str
spelling Gamma radiation effect on sisal / polyurethane composites without coupling agentsgamma radiationsisalpolyurethanemechanical propertiesgreen compositeAbstract Natural fibers and polyurethane based composites may present chemical bonding between the components of the polymer and the lignin of the fiber. The incidence of radiation can cause degradation of the polymeric material and alter its mechanical properties. The objective of this study was to obtain and characterize cold pressed composites from polyurethane derived from castor oil and sisal fibers, without coupling agents, through thermogravimetric and mechanical tests, before and after the incidence of 25 kGy dose of gamma radiation. Woven composites that were not irradiated had maximum values of 4.40 GPa for flexural elastic modulus on three point flexural test and dispersed fiber composite that were not irradiated had maximum values of 2.25 GPa. These materials are adequate for use in non-structural applications in radiotherapy and radiodiagnostic rooms.Associação Brasileira de Polímeros2017-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000200165Polímeros v.27 n.2 2017reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.05916info:eu-repo/semantics/openAccessVasco,Marina CardosoClaro Neto,SalvadorNascimento,Eduardo MauroAzevedo,Elaineeng2017-08-04T00:00:00Zoai:scielo:S0104-14282017000200165Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2017-08-04T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Gamma radiation effect on sisal / polyurethane composites without coupling agents
title Gamma radiation effect on sisal / polyurethane composites without coupling agents
spellingShingle Gamma radiation effect on sisal / polyurethane composites without coupling agents
Vasco,Marina Cardoso
gamma radiation
sisal
polyurethane
mechanical properties
green composite
title_short Gamma radiation effect on sisal / polyurethane composites without coupling agents
title_full Gamma radiation effect on sisal / polyurethane composites without coupling agents
title_fullStr Gamma radiation effect on sisal / polyurethane composites without coupling agents
title_full_unstemmed Gamma radiation effect on sisal / polyurethane composites without coupling agents
title_sort Gamma radiation effect on sisal / polyurethane composites without coupling agents
author Vasco,Marina Cardoso
author_facet Vasco,Marina Cardoso
Claro Neto,Salvador
Nascimento,Eduardo Mauro
Azevedo,Elaine
author_role author
author2 Claro Neto,Salvador
Nascimento,Eduardo Mauro
Azevedo,Elaine
author2_role author
author
author
dc.contributor.author.fl_str_mv Vasco,Marina Cardoso
Claro Neto,Salvador
Nascimento,Eduardo Mauro
Azevedo,Elaine
dc.subject.por.fl_str_mv gamma radiation
sisal
polyurethane
mechanical properties
green composite
topic gamma radiation
sisal
polyurethane
mechanical properties
green composite
description Abstract Natural fibers and polyurethane based composites may present chemical bonding between the components of the polymer and the lignin of the fiber. The incidence of radiation can cause degradation of the polymeric material and alter its mechanical properties. The objective of this study was to obtain and characterize cold pressed composites from polyurethane derived from castor oil and sisal fibers, without coupling agents, through thermogravimetric and mechanical tests, before and after the incidence of 25 kGy dose of gamma radiation. Woven composites that were not irradiated had maximum values of 4.40 GPa for flexural elastic modulus on three point flexural test and dispersed fiber composite that were not irradiated had maximum values of 2.25 GPa. These materials are adequate for use in non-structural applications in radiotherapy and radiodiagnostic rooms.
publishDate 2017
dc.date.none.fl_str_mv 2017-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000200165
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000200165
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.05916
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Polímeros
publisher.none.fl_str_mv Associação Brasileira de Polímeros
dc.source.none.fl_str_mv Polímeros v.27 n.2 2017
reponame:Polímeros (São Carlos. Online)
instname:Associação Brasileira de Polímeros (ABPol)
instacron:ABPO
instname_str Associação Brasileira de Polímeros (ABPol)
instacron_str ABPO
institution ABPO
reponame_str Polímeros (São Carlos. Online)
collection Polímeros (São Carlos. Online)
repository.name.fl_str_mv Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)
repository.mail.fl_str_mv ||revista@abpol.org.br
_version_ 1754212590428356608

Registros relacionados