Morphology of plastic deformation and fracture of a biodegradable biopolymer

Autores
Hermida, Elida Beatriz; Casariego, Vanesa
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is becoming a hope for the development of sustainable products because it is produced from renewable resources, is completely biodegradable and can be molded as a petrochemical thermoplastic. The mechanical behavior and biodegradability of this semi-crystalline material strongly depends on its morphology. Particularly, in this paper we show how the amorphous matrix and the spherulites of PHBV behave under tension until failure. To achieve this goal, we prepared an acid etching agent to reveal details in the spherulitic structure of compressed molded sheets. Micro-tensile tests, performed with a home-made mini-testing machine set on the stage on an inverted polarized optical microscope, allow to follow morphological changes while loading and to determine the different crack propagation mechanisms. Crazing and shear bands are the strain mechanisms operating within the amorphous matrix of PHBV. In the closely packed spherulitic morphology, crack propagation may be: along the circumferential planes of the spherulites, trans-spherulitic along radial or circumferential planes or through the sharp boundaries between adjacent spherulites.
Fil: Hermida, Elida Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Casariego, Vanesa. Universidad Nacional de San Martín. Instituto Sabato; Argentina
Materia
Polarized light microscopy
Morphology
Strain mechanisms
Fracture
Biopolymer
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/242503
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Morphology of plastic deformation and fracture of a biodegradable biopolymerHermida, Elida BeatrizCasariego, VanesaPolarized light microscopyMorphologyStrain mechanismsFractureBiopolymerhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is becoming a hope for the development of sustainable products because it is produced from renewable resources, is completely biodegradable and can be molded as a petrochemical thermoplastic. The mechanical behavior and biodegradability of this semi-crystalline material strongly depends on its morphology. Particularly, in this paper we show how the amorphous matrix and the spherulites of PHBV behave under tension until failure. To achieve this goal, we prepared an acid etching agent to reveal details in the spherulitic structure of compressed molded sheets. Micro-tensile tests, performed with a home-made mini-testing machine set on the stage on an inverted polarized optical microscope, allow to follow morphological changes while loading and to determine the different crack propagation mechanisms. Crazing and shear bands are the strain mechanisms operating within the amorphous matrix of PHBV. In the closely packed spherulitic morphology, crack propagation may be: along the circumferential planes of the spherulites, trans-spherulitic along radial or circumferential planes or through the sharp boundaries between adjacent spherulites.Fil: Hermida, Elida Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Casariego, Vanesa. Universidad Nacional de San Martín. Instituto Sabato; ArgentinaWiley2009-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/242503Hermida, Elida Beatriz; Casariego, Vanesa; Morphology of plastic deformation and fracture of a biodegradable biopolymer; Wiley; Microscopy and Analysis; 23; 1-2009; 5-80958-1952CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://analyticalscience.wiley.com/content/article-do/morphology-plastic-deformation-and-fracture-biodegradable-biopolymerinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:21:34Zoai:ri.conicet.gov.ar:11336/242503instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:21:34.598CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Morphology of plastic deformation and fracture of a biodegradable biopolymer
title Morphology of plastic deformation and fracture of a biodegradable biopolymer
spellingShingle Morphology of plastic deformation and fracture of a biodegradable biopolymer
Hermida, Elida Beatriz
Polarized light microscopy
Morphology
Strain mechanisms
Fracture
Biopolymer
title_short Morphology of plastic deformation and fracture of a biodegradable biopolymer
title_full Morphology of plastic deformation and fracture of a biodegradable biopolymer
title_fullStr Morphology of plastic deformation and fracture of a biodegradable biopolymer
title_full_unstemmed Morphology of plastic deformation and fracture of a biodegradable biopolymer
title_sort Morphology of plastic deformation and fracture of a biodegradable biopolymer
dc.creator.none.fl_str_mv Hermida, Elida Beatriz
Casariego, Vanesa
author Hermida, Elida Beatriz
author_facet Hermida, Elida Beatriz
Casariego, Vanesa
author_role author
author2 Casariego, Vanesa
author2_role author
dc.subject.none.fl_str_mv Polarized light microscopy
Morphology
Strain mechanisms
Fracture
Biopolymer
topic Polarized light microscopy
Morphology
Strain mechanisms
Fracture
Biopolymer
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is becoming a hope for the development of sustainable products because it is produced from renewable resources, is completely biodegradable and can be molded as a petrochemical thermoplastic. The mechanical behavior and biodegradability of this semi-crystalline material strongly depends on its morphology. Particularly, in this paper we show how the amorphous matrix and the spherulites of PHBV behave under tension until failure. To achieve this goal, we prepared an acid etching agent to reveal details in the spherulitic structure of compressed molded sheets. Micro-tensile tests, performed with a home-made mini-testing machine set on the stage on an inverted polarized optical microscope, allow to follow morphological changes while loading and to determine the different crack propagation mechanisms. Crazing and shear bands are the strain mechanisms operating within the amorphous matrix of PHBV. In the closely packed spherulitic morphology, crack propagation may be: along the circumferential planes of the spherulites, trans-spherulitic along radial or circumferential planes or through the sharp boundaries between adjacent spherulites.
Fil: Hermida, Elida Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Casariego, Vanesa. Universidad Nacional de San Martín. Instituto Sabato; Argentina
description Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is becoming a hope for the development of sustainable products because it is produced from renewable resources, is completely biodegradable and can be molded as a petrochemical thermoplastic. The mechanical behavior and biodegradability of this semi-crystalline material strongly depends on its morphology. Particularly, in this paper we show how the amorphous matrix and the spherulites of PHBV behave under tension until failure. To achieve this goal, we prepared an acid etching agent to reveal details in the spherulitic structure of compressed molded sheets. Micro-tensile tests, performed with a home-made mini-testing machine set on the stage on an inverted polarized optical microscope, allow to follow morphological changes while loading and to determine the different crack propagation mechanisms. Crazing and shear bands are the strain mechanisms operating within the amorphous matrix of PHBV. In the closely packed spherulitic morphology, crack propagation may be: along the circumferential planes of the spherulites, trans-spherulitic along radial or circumferential planes or through the sharp boundaries between adjacent spherulites.
publishDate 2009
dc.date.none.fl_str_mv 2009-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/242503
Hermida, Elida Beatriz; Casariego, Vanesa; Morphology of plastic deformation and fracture of a biodegradable biopolymer; Wiley; Microscopy and Analysis; 23; 1-2009; 5-8
0958-1952
CONICET Digital
CONICET
url http://hdl.handle.net/11336/242503
identifier_str_mv Hermida, Elida Beatriz; Casariego, Vanesa; Morphology of plastic deformation and fracture of a biodegradable biopolymer; Wiley; Microscopy and Analysis; 23; 1-2009; 5-8
0958-1952
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://analyticalscience.wiley.com/content/article-do/morphology-plastic-deformation-and-fracture-biodegradable-biopolymer
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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