Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends

Detalhes bibliográficos
Autor(a) principal: Guzmán,Manuel
Data de Publicação: 2017
Outros Autores: Giraldo,Diego, Murillo,Edwin
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=S0104-14282017000100001
Resumo: Abstract In this work, low density polyethylene (LDPE)/plasticized starch (TPS) blends were prepared. The TPS employed in this study was obtained by plasticization of tapioca starch with a hyperbranched polyester polyol. Differential scanning calorimetry analysis showed that the melting temperature increased with the TPS content. The opposite effect was exhibited in the crystallization temperature and additional changes were not observed during the heating. X-ray diffraction analysis showed a reduction in intensity of the peak at Bragg’s angle 17.5°, proving a diminution on A type crystallinity with the increasing amount of LDPE. Micrographs obtained by scanning electron microscopy exhibited starch granules without destructure. TPS acted as a filler to LDPE, since the mechanical properties (Young’s modulus and tensile strength) improved ostensibly. The Young’ modulus and tensile strength decreased with the amount of LDPE, however, the elongation at break exhibited an opposite behavior.
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spelling Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blendsLDPEthermoplastic starchblendspropertiesAbstract In this work, low density polyethylene (LDPE)/plasticized starch (TPS) blends were prepared. The TPS employed in this study was obtained by plasticization of tapioca starch with a hyperbranched polyester polyol. Differential scanning calorimetry analysis showed that the melting temperature increased with the TPS content. The opposite effect was exhibited in the crystallization temperature and additional changes were not observed during the heating. X-ray diffraction analysis showed a reduction in intensity of the peak at Bragg’s angle 17.5°, proving a diminution on A type crystallinity with the increasing amount of LDPE. Micrographs obtained by scanning electron microscopy exhibited starch granules without destructure. TPS acted as a filler to LDPE, since the mechanical properties (Young’s modulus and tensile strength) improved ostensibly. The Young’ modulus and tensile strength decreased with the amount of LDPE, however, the elongation at break exhibited an opposite behavior.Associação Brasileira de Polímeros2017-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100001Polímeros v.27 n.1 2017reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.04816info:eu-repo/semantics/openAccessGuzmán,ManuelGiraldo,DiegoMurillo,Edwineng2017-06-20T00:00:00Zoai:scielo:S0104-14282017000100001Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2017-06-20T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
title Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
spellingShingle Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
Guzmán,Manuel
LDPE
thermoplastic starch
blends
properties
title_short Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
title_full Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
title_fullStr Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
title_full_unstemmed Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
title_sort Hyperbranched polyester polyol plasticized tapioca starch/low density polyethylene blends
author Guzmán,Manuel
author_facet Guzmán,Manuel
Giraldo,Diego
Murillo,Edwin
author_role author
author2 Giraldo,Diego
Murillo,Edwin
author2_role author
author
dc.contributor.author.fl_str_mv Guzmán,Manuel
Giraldo,Diego
Murillo,Edwin
dc.subject.por.fl_str_mv LDPE
thermoplastic starch
blends
properties
topic LDPE
thermoplastic starch
blends
properties
description Abstract In this work, low density polyethylene (LDPE)/plasticized starch (TPS) blends were prepared. The TPS employed in this study was obtained by plasticization of tapioca starch with a hyperbranched polyester polyol. Differential scanning calorimetry analysis showed that the melting temperature increased with the TPS content. The opposite effect was exhibited in the crystallization temperature and additional changes were not observed during the heating. X-ray diffraction analysis showed a reduction in intensity of the peak at Bragg’s angle 17.5°, proving a diminution on A type crystallinity with the increasing amount of LDPE. Micrographs obtained by scanning electron microscopy exhibited starch granules without destructure. TPS acted as a filler to LDPE, since the mechanical properties (Young’s modulus and tensile strength) improved ostensibly. The Young’ modulus and tensile strength decreased with the amount of LDPE, however, the elongation at break exhibited an opposite behavior.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-01
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=S0104-14282017000100001
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.04816
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.1 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
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