Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets

Detalhes bibliográficos
Autor(a) principal: Zanela,Juliano
Data de Publicação: 2018
Outros Autores: Bilck,Ana Paula, Casagrande,Maira, Grossmann,Maria Victória Eiras, Yamashita,Fabio
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=S0104-14282018000300256
Resumo: Abstract The aim of this work was to study the relationship of chain size of partially hydrolyzed PVA blended with starch in properties of biodegradable sheets produced by thermoplastic extrusion. It was also studied the effect of extrusion temperature profile to determine the better PVA chain size and temperature profile to produce biodegradable sheets through a factorial design. The processability and the mechanical, thermal, optical, and microstructural properties of the biodegradable sheets were adequate, indicating that PVA/cassava starch blends have potential to replace conventional non-biodegradable polymers. Tensile strength and Young’s modulus ranges from 1.0 to 2.6 and 3.0 to 6.9 MPa respectively, the elongation at break ranges from 42 to 421%. It was not possible to state a conclusive relationship between PVA molecular weight and the materials properties, but in general, PVA with medium molecular weight and high extrusion temperature profile promote an increase of mechanical properties of the sheets.
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spelling Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheetscalenderingexperimental designmechanical propertiesAbstract The aim of this work was to study the relationship of chain size of partially hydrolyzed PVA blended with starch in properties of biodegradable sheets produced by thermoplastic extrusion. It was also studied the effect of extrusion temperature profile to determine the better PVA chain size and temperature profile to produce biodegradable sheets through a factorial design. The processability and the mechanical, thermal, optical, and microstructural properties of the biodegradable sheets were adequate, indicating that PVA/cassava starch blends have potential to replace conventional non-biodegradable polymers. Tensile strength and Young’s modulus ranges from 1.0 to 2.6 and 3.0 to 6.9 MPa respectively, the elongation at break ranges from 42 to 421%. It was not possible to state a conclusive relationship between PVA molecular weight and the materials properties, but in general, PVA with medium molecular weight and high extrusion temperature profile promote an increase of mechanical properties of the sheets.Associação Brasileira de Polímeros2018-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300256Polímeros v.28 n.3 2018reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.03417info:eu-repo/semantics/openAccessZanela,JulianoBilck,Ana PaulaCasagrande,MairaGrossmann,Maria Victória EirasYamashita,Fabioeng2018-08-03T00:00:00Zoai:scielo:S0104-14282018000300256Revistahttp://www.scielo.br/pohttps://old.scielo.br/oai/scielo-oai.php||revista@abpol.org.br1678-51690104-1428opendoar:2018-08-03T00:00Polímeros (São Carlos. Online) - Associação Brasileira de Polímeros (ABPol)false
dc.title.none.fl_str_mv Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
title Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
spellingShingle Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
Zanela,Juliano
calendering
experimental design
mechanical properties
title_short Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
title_full Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
title_fullStr Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
title_full_unstemmed Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
title_sort Polyvinyl alcohol (PVA) molecular weight and extrusion temperature in starch/PVA biodegradable sheets
author Zanela,Juliano
author_facet Zanela,Juliano
Bilck,Ana Paula
Casagrande,Maira
Grossmann,Maria Victória Eiras
Yamashita,Fabio
author_role author
author2 Bilck,Ana Paula
Casagrande,Maira
Grossmann,Maria Victória Eiras
Yamashita,Fabio
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Zanela,Juliano
Bilck,Ana Paula
Casagrande,Maira
Grossmann,Maria Victória Eiras
Yamashita,Fabio
dc.subject.por.fl_str_mv calendering
experimental design
mechanical properties
topic calendering
experimental design
mechanical properties
description Abstract The aim of this work was to study the relationship of chain size of partially hydrolyzed PVA blended with starch in properties of biodegradable sheets produced by thermoplastic extrusion. It was also studied the effect of extrusion temperature profile to determine the better PVA chain size and temperature profile to produce biodegradable sheets through a factorial design. The processability and the mechanical, thermal, optical, and microstructural properties of the biodegradable sheets were adequate, indicating that PVA/cassava starch blends have potential to replace conventional non-biodegradable polymers. Tensile strength and Young’s modulus ranges from 1.0 to 2.6 and 3.0 to 6.9 MPa respectively, the elongation at break ranges from 42 to 421%. It was not possible to state a conclusive relationship between PVA molecular weight and the materials properties, but in general, PVA with medium molecular weight and high extrusion temperature profile promote an increase of mechanical properties of the sheets.
publishDate 2018
dc.date.none.fl_str_mv 2018-09-01
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=S0104-14282018000300256
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282018000300256
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.03417
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.28 n.3 2018
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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