Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends

Detalhes bibliográficos
Autor(a) principal: Torres,Sandro Junior Vessoni
Data de Publicação: 2020
Outros Autores: Medeiros,Gabriela Brunosi, Rosário,Francisco, Yamashita,Fabio, Mattoso,Luiz Henrique Capparelli, Corradini,Elisângela
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=S0104-14282020000400407
Resumo: Abstract Blends of zein and poly(vinyl alcohol) (PVAl) were processed in an internal mixer (150ºC, 50 rpm) for 5-8 minutes. Glycerol and oleic acid were used as plasticizers. The mixtures obtained were then compression molded and further characterized by Fourier transform infrared spectroscopy (FTIR), water-absorption experiments, mechanical tests, and scanning electron microscopy (SEM). FTIR analysis indicated the existence of hydrogen bonding interactions between zein and PVAl. Tensile tests showed that the addition of PVAl increased the flexibility of the blends. The tensile strength ranged from 1.7 to 5.7 MPa, elongation at break ranged from 2.7 to 32% and Young’s modulus ranged from 433 to 7371 MPa. Water absorption at equilibrium decreased with increasing zein content, which favored a brittle behavior in the zein/PVAl. The blends were immiscible in the composition studied and the presence of voids indicated poor interfacial interaction between the polymers.
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spelling Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blendsmelt processingoleic acidglycerolpoly(vinyl alcohol) and zeinAbstract Blends of zein and poly(vinyl alcohol) (PVAl) were processed in an internal mixer (150ºC, 50 rpm) for 5-8 minutes. Glycerol and oleic acid were used as plasticizers. The mixtures obtained were then compression molded and further characterized by Fourier transform infrared spectroscopy (FTIR), water-absorption experiments, mechanical tests, and scanning electron microscopy (SEM). FTIR analysis indicated the existence of hydrogen bonding interactions between zein and PVAl. Tensile tests showed that the addition of PVAl increased the flexibility of the blends. The tensile strength ranged from 1.7 to 5.7 MPa, elongation at break ranged from 2.7 to 32% and Young’s modulus ranged from 433 to 7371 MPa. Water absorption at equilibrium decreased with increasing zein content, which favored a brittle behavior in the zein/PVAl. The blends were immiscible in the composition studied and the presence of voids indicated poor interfacial interaction between the polymers.Associação Brasileira de Polímeros2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282020000400407Polímeros v.30 n.4 2020reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.10619info:eu-repo/semantics/openAccessTorres,Sandro Junior VessoniMedeiros,Gabriela BrunosiRosário,FranciscoYamashita,FabioMattoso,Luiz Henrique CapparelliCorradini,Elisângelaeng2021-04-20T00:00:00Zoai:scielo:S0104-14282020000400407Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2021-04-20T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
title Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
spellingShingle Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
Torres,Sandro Junior Vessoni
melt processing
oleic acid
glycerol
poly(vinyl alcohol) and zein
title_short Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
title_full Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
title_fullStr Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
title_full_unstemmed Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
title_sort Mechanical and water absorption properties and morphology of melt processed Zein/PVAl blends
author Torres,Sandro Junior Vessoni
author_facet Torres,Sandro Junior Vessoni
Medeiros,Gabriela Brunosi
Rosário,Francisco
Yamashita,Fabio
Mattoso,Luiz Henrique Capparelli
Corradini,Elisângela
author_role author
author2 Medeiros,Gabriela Brunosi
Rosário,Francisco
Yamashita,Fabio
Mattoso,Luiz Henrique Capparelli
Corradini,Elisângela
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Torres,Sandro Junior Vessoni
Medeiros,Gabriela Brunosi
Rosário,Francisco
Yamashita,Fabio
Mattoso,Luiz Henrique Capparelli
Corradini,Elisângela
dc.subject.por.fl_str_mv melt processing
oleic acid
glycerol
poly(vinyl alcohol) and zein
topic melt processing
oleic acid
glycerol
poly(vinyl alcohol) and zein
description Abstract Blends of zein and poly(vinyl alcohol) (PVAl) were processed in an internal mixer (150ºC, 50 rpm) for 5-8 minutes. Glycerol and oleic acid were used as plasticizers. The mixtures obtained were then compression molded and further characterized by Fourier transform infrared spectroscopy (FTIR), water-absorption experiments, mechanical tests, and scanning electron microscopy (SEM). FTIR analysis indicated the existence of hydrogen bonding interactions between zein and PVAl. Tensile tests showed that the addition of PVAl increased the flexibility of the blends. The tensile strength ranged from 1.7 to 5.7 MPa, elongation at break ranged from 2.7 to 32% and Young’s modulus ranged from 433 to 7371 MPa. Water absorption at equilibrium decreased with increasing zein content, which favored a brittle behavior in the zein/PVAl. The blends were immiscible in the composition studied and the presence of voids indicated poor interfacial interaction between the polymers.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
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=S0104-14282020000400407
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282020000400407
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.10619
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.30 n.4 2020
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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