Ageing of poly(lactic acid) films plasticized with commercial polyadipates

Autores
Martino, Verónica Patricia; Ruseckaite, Roxana Alejandra; Jiménez, Alfonso
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
BACKGROUND: Amorphous poly(lactic acid) (PLA) was plasticized with two polyadipates with different molar masses. Some physical properties were studied over time to evaluate the stability of these blends. The aim of this study was to improve PLA ductility and consider the feasibility of its use in flexible films for food packaging. RESULTS: The addition of polyadipates caused a decrease of the glass transition temperature (Tg) and an increase of PLA chain mobility. Samples with Tg values above the storage temperature suffered physical ageing with a reduction in free volume. All the unaged blends were mainly amorphous, but samples with Tg below the storage temperature developed crystallinity during ageing leading to phase separation. Ductile properties of films improved with plasticizer content immediately after blending, but there was a deterioration in such properties upon ageing due to matrix densification and crystallization of PLA chains. CONCLUSION: PLA can be efficiently plasticized by polyadipates and the results have shown that some of the prepared films remain flexible with no phase separation after 150 days.
Fil: Martino, Verónica Patricia. Universidad de Alicante; España
Fil: Ruseckaite, Roxana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Jiménez, Alfonso. Universidad de Alicante; España
Materia
Poly(Lactic Acid)
Polyadipates
Films
Ageing
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:11336/66214
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ageing of poly(lactic acid) films plasticized with commercial polyadipatesMartino, Verónica PatriciaRuseckaite, Roxana AlejandraJiménez, AlfonsoPoly(Lactic Acid)PolyadipatesFilmsAgeinghttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2BACKGROUND: Amorphous poly(lactic acid) (PLA) was plasticized with two polyadipates with different molar masses. Some physical properties were studied over time to evaluate the stability of these blends. The aim of this study was to improve PLA ductility and consider the feasibility of its use in flexible films for food packaging. RESULTS: The addition of polyadipates caused a decrease of the glass transition temperature (Tg) and an increase of PLA chain mobility. Samples with Tg values above the storage temperature suffered physical ageing with a reduction in free volume. All the unaged blends were mainly amorphous, but samples with Tg below the storage temperature developed crystallinity during ageing leading to phase separation. Ductile properties of films improved with plasticizer content immediately after blending, but there was a deterioration in such properties upon ageing due to matrix densification and crystallization of PLA chains. CONCLUSION: PLA can be efficiently plasticized by polyadipates and the results have shown that some of the prepared films remain flexible with no phase separation after 150 days.Fil: Martino, Verónica Patricia. Universidad de Alicante; EspañaFil: Ruseckaite, Roxana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Jiménez, Alfonso. Universidad de Alicante; EspañaJohn Wiley & Sons Ltd2009-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66214Martino, Verónica Patricia; Ruseckaite, Roxana Alejandra; Jiménez, Alfonso; Ageing of poly(lactic acid) films plasticized with commercial polyadipates; John Wiley & Sons Ltd; Polymer International; 58; 4; 4-2009; 437-4440959-8103CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/pi.2556info:eu-repo/semantics/altIdentifier/doi/10.1002/pi.2556info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:31:33Zoai:ri.conicet.gov.ar:11336/66214instacron: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:34982025-09-29 10:31:33.834CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ageing of poly(lactic acid) films plasticized with commercial polyadipates
title Ageing of poly(lactic acid) films plasticized with commercial polyadipates
spellingShingle Ageing of poly(lactic acid) films plasticized with commercial polyadipates
Martino, Verónica Patricia
Poly(Lactic Acid)
Polyadipates
Films
Ageing
title_short Ageing of poly(lactic acid) films plasticized with commercial polyadipates
title_full Ageing of poly(lactic acid) films plasticized with commercial polyadipates
title_fullStr Ageing of poly(lactic acid) films plasticized with commercial polyadipates
title_full_unstemmed Ageing of poly(lactic acid) films plasticized with commercial polyadipates
title_sort Ageing of poly(lactic acid) films plasticized with commercial polyadipates
dc.creator.none.fl_str_mv Martino, Verónica Patricia
Ruseckaite, Roxana Alejandra
Jiménez, Alfonso
author Martino, Verónica Patricia
author_facet Martino, Verónica Patricia
Ruseckaite, Roxana Alejandra
Jiménez, Alfonso
author_role author
author2 Ruseckaite, Roxana Alejandra
Jiménez, Alfonso
author2_role author
author
dc.subject.none.fl_str_mv Poly(Lactic Acid)
Polyadipates
Films
Ageing
topic Poly(Lactic Acid)
Polyadipates
Films
Ageing
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv BACKGROUND: Amorphous poly(lactic acid) (PLA) was plasticized with two polyadipates with different molar masses. Some physical properties were studied over time to evaluate the stability of these blends. The aim of this study was to improve PLA ductility and consider the feasibility of its use in flexible films for food packaging. RESULTS: The addition of polyadipates caused a decrease of the glass transition temperature (Tg) and an increase of PLA chain mobility. Samples with Tg values above the storage temperature suffered physical ageing with a reduction in free volume. All the unaged blends were mainly amorphous, but samples with Tg below the storage temperature developed crystallinity during ageing leading to phase separation. Ductile properties of films improved with plasticizer content immediately after blending, but there was a deterioration in such properties upon ageing due to matrix densification and crystallization of PLA chains. CONCLUSION: PLA can be efficiently plasticized by polyadipates and the results have shown that some of the prepared films remain flexible with no phase separation after 150 days.
Fil: Martino, Verónica Patricia. Universidad de Alicante; España
Fil: Ruseckaite, Roxana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Fil: Jiménez, Alfonso. Universidad de Alicante; España
description BACKGROUND: Amorphous poly(lactic acid) (PLA) was plasticized with two polyadipates with different molar masses. Some physical properties were studied over time to evaluate the stability of these blends. The aim of this study was to improve PLA ductility and consider the feasibility of its use in flexible films for food packaging. RESULTS: The addition of polyadipates caused a decrease of the glass transition temperature (Tg) and an increase of PLA chain mobility. Samples with Tg values above the storage temperature suffered physical ageing with a reduction in free volume. All the unaged blends were mainly amorphous, but samples with Tg below the storage temperature developed crystallinity during ageing leading to phase separation. Ductile properties of films improved with plasticizer content immediately after blending, but there was a deterioration in such properties upon ageing due to matrix densification and crystallization of PLA chains. CONCLUSION: PLA can be efficiently plasticized by polyadipates and the results have shown that some of the prepared films remain flexible with no phase separation after 150 days.
publishDate 2009
dc.date.none.fl_str_mv 2009-04
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/11336/66214
Martino, Verónica Patricia; Ruseckaite, Roxana Alejandra; Jiménez, Alfonso; Ageing of poly(lactic acid) films plasticized with commercial polyadipates; John Wiley & Sons Ltd; Polymer International; 58; 4; 4-2009; 437-444
0959-8103
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66214
identifier_str_mv Martino, Verónica Patricia; Ruseckaite, Roxana Alejandra; Jiménez, Alfonso; Ageing of poly(lactic acid) films plasticized with commercial polyadipates; John Wiley & Sons Ltd; Polymer International; 58; 4; 4-2009; 437-444
0959-8103
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://onlinelibrary.wiley.com/doi/abs/10.1002/pi.2556
info:eu-repo/semantics/altIdentifier/doi/10.1002/pi.2556
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 John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
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 13.070432

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