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

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dc.contributor.authorLopez-Gil, Alberto
dc.contributor.authorRodriguez-Perez, Miguel Ángel
dc.contributor.authorDe Saja, José Antonio
dc.contributor.authorBellucci, Felipe Silva [UNESP]
dc.contributor.authorArdanuy, Monica
dc.contributor.institutionUniversity of Valladolid
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversitat Politècnica de Catalunya
dc.date.accessioned2015-11-03T15:29:36Z
dc.date.available2015-11-03T15:29:36Z
dc.date.issued2014-07-01
dc.description.abstractBiodegradable 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).en
dc.description.affiliationUniversity of Valladolid, Department of Condensed Matter Physics
dc.description.affiliationUniversitat Politècnica de Catalunya, Department of Textile and Paper Engineering
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Física, Química e Biologia, Faculdade de Ciências e Tecnologia de Presidente Prudente
dc.format.extent36-42
dc.identifierhttp://revistapolimeros.org.br/doi/10.4322/polimeros.2014.054
dc.identifier.citationPolimeros Ciência E Tecnologia. Sao Carlos: Assoc Brasil Polimeros, v. 24, p. 36-42, 2014.
dc.identifier.doi10.4322/polimeros.2014.054
dc.identifier.fileWOS000339466000008.pdf
dc.identifier.issn0104-1428
dc.identifier.urihttp://hdl.handle.net/11449/130142
dc.identifier.wosWOS:000339466000008
dc.language.isoeng
dc.publisherAssoc Brasil Polimeros
dc.relation.ispartofPolimeros Ciência E Tecnologia
dc.relation.ispartofjcr0.700
dc.relation.ispartofsjr0,244
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectBiodegradableen
dc.subjectStarchen
dc.subjectThermoplastic starchen
dc.subjectBiocompositesen
dc.subjectFood packagingen
dc.subjectNatural fibersen
dc.subjectBarleyen
dc.subjectGrapeen
dc.titleStrategies to improve the mechanical properties of starch-based materials: plasticization and natural fibers reinforcementen
dc.typeArtigo
dcterms.rightsHolderAssoc Brasil Polimeros
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências e Tecnologia, Presidente Prudentept

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Artigos - Física, Química e Biologia - FCT