Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4322/polimeros.2014.053 http://hdl.handle.net/11449/211505 |
Resumo: | Biodegradable polymers are starting to be introduced as raw materials in the food-packaging market. Nevertheless, their price is very high. Starch, a fully biodegradable and bioderived polymer is a very interesting alternative due to its very low price. However, the use of starch as the polymer matrix for the production of rigid food packaging, such as trays, is limited due to its poor mechanical properties, high hidrophilicity and high density. This work presents two strategies to overcome the poor mechanical properties of starch. First, the plasticization of starch with several amounts of glycerol to produce thermoplastic starch (TPS) and second, the production of biocomposites by reinforcing TPS with promising fibers, such as barley straw and grape waste. The mechanical properties obtained are compared with the values predicted by models used in the field of composites; law of mixtures, Kerner-Nielsen and Halpin-Tsai. To evaluate if the materials developed are suitable for the production of food-packaging trays, the TPS-based materials with better mechanical properties were compared with commercial grades of oil-based polymers, polypropylene (PP) and polyethylene-terphthalate (PET), and a biodegradable polymer, polylactic acid (PLA). |
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Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcementBiodegradablestarchthermoplastic starchbiocompositesfood packagingnatural fibersbarleygrapeBiodegradable polymers are starting to be introduced as raw materials in the food-packaging market. Nevertheless, their price is very high. Starch, a fully biodegradable and bioderived polymer is a very interesting alternative due to its very low price. However, the use of starch as the polymer matrix for the production of rigid food packaging, such as trays, is limited due to its poor mechanical properties, high hidrophilicity and high density. This work presents two strategies to overcome the poor mechanical properties of starch. First, the plasticization of starch with several amounts of glycerol to produce thermoplastic starch (TPS) and second, the production of biocomposites by reinforcing TPS with promising fibers, such as barley straw and grape waste. The mechanical properties obtained are compared with the values predicted by models used in the field of composites; law of mixtures, Kerner-Nielsen and Halpin-Tsai. To evaluate if the materials developed are suitable for the production of food-packaging trays, the TPS-based materials with better mechanical properties were compared with commercial grades of oil-based polymers, polypropylene (PP) and polyethylene-terphthalate (PET), and a biodegradable polymer, polylactic acid (PLA).Universitat Politècnica de Catalunya, M. Ardanuy Department of Textile and Paper EngineeringUniversidade Estadual Paulista, F.S. Bellucci Department of Physics, Chemistry and BiologyUniversity of Valladolid, Department of Condensed Matter PhysicsUniversidade Estadual Paulista, F.S. Bellucci Department of Physics, Chemistry and BiologyAssociação Brasileira de PolímerosUniversitat Politècnica de CatalunyaUniversidade Estadual Paulista (Unesp)University of ValladolidLopez-gil, A.Rodriguez-perez, M.a. [UNESP]De Saja, J.a.2021-07-14T10:25:25Z2021-07-14T10:25:25Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article36-42application/pdfhttp://dx.doi.org/10.4322/polimeros.2014.053Polímeros. São Carlos, SP, Brazil: Associação Brasileira de Polímeros, v. 24, n. spe, p. 36-42, 2014.0104-14281678-5169http://hdl.handle.net/11449/21150510.4322/polimeros.2014.053S0104-14282014000700008S0104-14282014000700008.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPolímerosinfo:eu-repo/semantics/openAccess2023-12-31T06:15:19Zoai:repositorio.unesp.br:11449/211505Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:44:40.895024Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
title |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
spellingShingle |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement Lopez-gil, A. Biodegradable starch thermoplastic starch biocomposites food packaging natural fibers barley grape |
title_short |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
title_full |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
title_fullStr |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
title_full_unstemmed |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
title_sort |
Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement |
author |
Lopez-gil, A. |
author_facet |
Lopez-gil, A. Rodriguez-perez, M.a. [UNESP] De Saja, J.a. |
author_role |
author |
author2 |
Rodriguez-perez, M.a. [UNESP] De Saja, J.a. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universitat Politècnica de Catalunya Universidade Estadual Paulista (Unesp) University of Valladolid |
dc.contributor.author.fl_str_mv |
Lopez-gil, A. Rodriguez-perez, M.a. [UNESP] De Saja, J.a. |
dc.subject.por.fl_str_mv |
Biodegradable starch thermoplastic starch biocomposites food packaging natural fibers barley grape |
topic |
Biodegradable starch thermoplastic starch biocomposites food packaging natural fibers barley grape |
description |
Biodegradable polymers are starting to be introduced as raw materials in the food-packaging market. Nevertheless, their price is very high. Starch, a fully biodegradable and bioderived polymer is a very interesting alternative due to its very low price. However, the use of starch as the polymer matrix for the production of rigid food packaging, such as trays, is limited due to its poor mechanical properties, high hidrophilicity and high density. This work presents two strategies to overcome the poor mechanical properties of starch. First, the plasticization of starch with several amounts of glycerol to produce thermoplastic starch (TPS) and second, the production of biocomposites by reinforcing TPS with promising fibers, such as barley straw and grape waste. The mechanical properties obtained are compared with the values predicted by models used in the field of composites; law of mixtures, Kerner-Nielsen and Halpin-Tsai. To evaluate if the materials developed are suitable for the production of food-packaging trays, the TPS-based materials with better mechanical properties were compared with commercial grades of oil-based polymers, polypropylene (PP) and polyethylene-terphthalate (PET), and a biodegradable polymer, polylactic acid (PLA). |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2021-07-14T10:25:25Z 2021-07-14T10:25:25Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4322/polimeros.2014.053 Polímeros. São Carlos, SP, Brazil: Associação Brasileira de Polímeros, v. 24, n. spe, p. 36-42, 2014. 0104-1428 1678-5169 http://hdl.handle.net/11449/211505 10.4322/polimeros.2014.053 S0104-14282014000700008 S0104-14282014000700008.pdf |
url |
http://dx.doi.org/10.4322/polimeros.2014.053 http://hdl.handle.net/11449/211505 |
identifier_str_mv |
Polímeros. São Carlos, SP, Brazil: Associação Brasileira de Polímeros, v. 24, n. spe, p. 36-42, 2014. 0104-1428 1678-5169 10.4322/polimeros.2014.053 S0104-14282014000700008 S0104-14282014000700008.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Polímeros |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
36-42 application/pdf |
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 |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129353086664704 |