Strategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcement

Detalhes bibliográficos
Autor(a) principal: Lopez-gil, A.
Data de Publicação: 2014
Outros Autores: Rodriguez-perez, M.a. [UNESP], De Saja, J.a.
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).
id UNSP_0bf2f35220862863c0efd4f7d13adad1
oai_identifier_str oai:repositorio.unesp.br:11449/211505
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling 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