The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets

Detalhes bibliográficos
Autor(a) principal: Pizzoli,Ana Paula de Oliveira
Data de Publicação: 2017
Outros Autores: Yamashita,Fabio, Gonçalves,Odinei Hess, Shirai,Marianne Ayumi, Leimann,Fernanda Vitória
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=S0104-14282017000100027
Resumo: Abstract Films and sheets composed by poly (lactic acid) (PLA)/thermoplastic starch (TPS) and TPS/gelatin blends have already been produced and characterized in the literature. However, materials produced with these three biopolymers have not been clearly investigated. In this work, extruded sheets were produced with PLA, TPS (glycerol as plasticizer) and different amounts of gelatin (0, 1, 3 and 5 wt%) in a pilot scale co-rotating twin-screw extruder coupled with a calender. The extruded sheets were characterized in regards to their water solubility, thickness, density, water vapor permeability (WVP), moisture sorption isotherms, mechanical properties and microstructure. The results showed an increase in solubility and WVP besides a decrease of about 30% in tensile strength, Young's modulus and elongation at break. Extruded sheets microstructure revealed smother surfaces and homogeneous morphology with the addition of gelatin. The experiments demonstrated that extrusion and calendering process is a viable way to produce PLA/TPS/gelatin sheets with interesting properties.
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spelling The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheetsbiodegradable polymersextrusion-calenderinghydrophilicitymechanical characterizationmicrostructureAbstract Films and sheets composed by poly (lactic acid) (PLA)/thermoplastic starch (TPS) and TPS/gelatin blends have already been produced and characterized in the literature. However, materials produced with these three biopolymers have not been clearly investigated. In this work, extruded sheets were produced with PLA, TPS (glycerol as plasticizer) and different amounts of gelatin (0, 1, 3 and 5 wt%) in a pilot scale co-rotating twin-screw extruder coupled with a calender. The extruded sheets were characterized in regards to their water solubility, thickness, density, water vapor permeability (WVP), moisture sorption isotherms, mechanical properties and microstructure. The results showed an increase in solubility and WVP besides a decrease of about 30% in tensile strength, Young's modulus and elongation at break. Extruded sheets microstructure revealed smother surfaces and homogeneous morphology with the addition of gelatin. The experiments demonstrated that extrusion and calendering process is a viable way to produce PLA/TPS/gelatin sheets with interesting properties.Associação Brasileira de Polímeros2017-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100027Polímeros v.27 n.1 2017reponame:Polímeros (São Carlos. Online)instname:Associação Brasileira de Polímeros (ABPol)instacron:ABPO10.1590/0104-1428.2181info:eu-repo/semantics/openAccessPizzoli,Ana Paula de OliveiraYamashita,FabioGonçalves,Odinei HessShirai,Marianne AyumiLeimann,Fernanda Vitóriaeng2017-06-20T00:00:00Zoai:scielo:S0104-14282017000100027Revistahttp://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 The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
title The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
spellingShingle The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
Pizzoli,Ana Paula de Oliveira
biodegradable polymers
extrusion-calendering
hydrophilicity
mechanical characterization
microstructure
title_short The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
title_full The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
title_fullStr The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
title_full_unstemmed The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
title_sort The effect of gelatin amount on the properties of PLA/TPS/gelatin extruded sheets
author Pizzoli,Ana Paula de Oliveira
author_facet Pizzoli,Ana Paula de Oliveira
Yamashita,Fabio
Gonçalves,Odinei Hess
Shirai,Marianne Ayumi
Leimann,Fernanda Vitória
author_role author
author2 Yamashita,Fabio
Gonçalves,Odinei Hess
Shirai,Marianne Ayumi
Leimann,Fernanda Vitória
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Pizzoli,Ana Paula de Oliveira
Yamashita,Fabio
Gonçalves,Odinei Hess
Shirai,Marianne Ayumi
Leimann,Fernanda Vitória
dc.subject.por.fl_str_mv biodegradable polymers
extrusion-calendering
hydrophilicity
mechanical characterization
microstructure
topic biodegradable polymers
extrusion-calendering
hydrophilicity
mechanical characterization
microstructure
description Abstract Films and sheets composed by poly (lactic acid) (PLA)/thermoplastic starch (TPS) and TPS/gelatin blends have already been produced and characterized in the literature. However, materials produced with these three biopolymers have not been clearly investigated. In this work, extruded sheets were produced with PLA, TPS (glycerol as plasticizer) and different amounts of gelatin (0, 1, 3 and 5 wt%) in a pilot scale co-rotating twin-screw extruder coupled with a calender. The extruded sheets were characterized in regards to their water solubility, thickness, density, water vapor permeability (WVP), moisture sorption isotherms, mechanical properties and microstructure. The results showed an increase in solubility and WVP besides a decrease of about 30% in tensile strength, Young's modulus and elongation at break. Extruded sheets microstructure revealed smother surfaces and homogeneous morphology with the addition of gelatin. The experiments demonstrated that extrusion and calendering process is a viable way to produce PLA/TPS/gelatin sheets with interesting properties.
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=S0104-14282017000100027
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282017000100027
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-1428.2181
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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