Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism

Poly (lactic acid) (PLA) nanocomposites based on single and hybrid organic-modified montmorillonites were previously studied in terms of their morphologi-cal, thermal and fire performance. As surfactants of the organoclays influenced thecompatibility between the nanofillers and PLA with different de...

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Autores: Lopes Alves, Jefferson, De Tarso Viera e Rosa, Paulo, Redondo Realinho, Vera Cristina de|||0000-0001-9919-9782, Antunes, Marcelo de Sousa Pais|||0000-0001-5911-1969, Velasco Perero, José Ignacio|||0000-0003-0331-5270, Morales, Ana Rita
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/343812
Acceso en línea:https://hdl.handle.net/2117/343812
https://dx.doi.org/10.1002/app.50784
Access Level:acceso abierto
Palabra clave:Clay
Composite materials
Nanocomposites (Materials)
Composites
Mechanical properties
Argila
Materials compostos
Nanocompòsits (Materials)
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos
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spelling Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanismLopes Alves, JeffersonDe Tarso Viera e Rosa, PauloRedondo Realinho, Vera Cristina de|||0000-0001-9919-9782Antunes, Marcelo de Sousa Pais|||0000-0001-5911-1969Velasco Perero, José Ignacio|||0000-0003-0331-5270Morales, Ana RitaClayComposite materialsNanocomposites (Materials)ClayCompositesMechanical propertiesArgilaMaterials compostosNanocompòsits (Materials)Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostosPoly (lactic acid) (PLA) nanocomposites based on single and hybrid organic-modified montmorillonites were previously studied in terms of their morphologi-cal, thermal and fire performance. As surfactants of the organoclays influenced thecompatibility between the nanofillers and PLA with different degrees of clay plate-lets dispersion, the present work investigated the effect of these features in themechanical properties of PLA nanocomposites. PLA nanocomposites specimenswere analyzed by dynamic-mechanical-thermal analysis, which pointed outchanges in the viscoelastic behavior of the materials by the incorporation of theorganoclays, namely the increase of the storage modulus due to polymerchains movements rest riction and reinfor cement effects associated with the disper-sion of the nanofillers. Flexural and impact testing showed that hybridorganomontmorillonites containing ester ammonium and ethoxylated amineimproved PLA's ductility, toughness and impact resistance. This behavior wasexplained by the high level of compatibility and interaction between the surfactantsand PLA chains due to the polar groups in their structures. These organoclays cau-sed a transition on PLA's fracture from brittle to ductile in a way that the toughen-ing mechanism was explained by crazing and multi-shear banding induced by theplasticized interfacial region around these organoclaysWiley20212021-04-0420212021-04-16journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/343812https://dx.doi.org/10.1002/app.50784reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-89787-P ESPUMAS POLIMERICAS MULTIFUNCIONALES BASADAS EN TERMOPLASTICOS DE ALTA TEMPERATURAopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3438122026-05-27T15:37:01Z
dc.title.none.fl_str_mv Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
title Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
spellingShingle Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
Lopes Alves, Jefferson
Clay
Composite materials
Nanocomposites (Materials)
Clay
Composites
Mechanical properties
Argila
Materials compostos
Nanocompòsits (Materials)
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos
title_short Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
title_full Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
title_fullStr Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
title_full_unstemmed Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
title_sort Single and hybrid organoclay-filled PLA nanocomposites: mechanical properties, viscoelastic behavior and fracture toughening mechanism
dc.creator.none.fl_str_mv Lopes Alves, Jefferson
De Tarso Viera e Rosa, Paulo
Redondo Realinho, Vera Cristina de|||0000-0001-9919-9782
Antunes, Marcelo de Sousa Pais|||0000-0001-5911-1969
Velasco Perero, José Ignacio|||0000-0003-0331-5270
Morales, Ana Rita
author Lopes Alves, Jefferson
author_facet Lopes Alves, Jefferson
De Tarso Viera e Rosa, Paulo
Redondo Realinho, Vera Cristina de|||0000-0001-9919-9782
Antunes, Marcelo de Sousa Pais|||0000-0001-5911-1969
Velasco Perero, José Ignacio|||0000-0003-0331-5270
Morales, Ana Rita
author_role author
author2 De Tarso Viera e Rosa, Paulo
Redondo Realinho, Vera Cristina de|||0000-0001-9919-9782
Antunes, Marcelo de Sousa Pais|||0000-0001-5911-1969
Velasco Perero, José Ignacio|||0000-0003-0331-5270
Morales, Ana Rita
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Clay
Composite materials
Nanocomposites (Materials)
Clay
Composites
Mechanical properties
Argila
Materials compostos
Nanocompòsits (Materials)
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos
topic Clay
Composite materials
Nanocomposites (Materials)
Clay
Composites
Mechanical properties
Argila
Materials compostos
Nanocompòsits (Materials)
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos
description Poly (lactic acid) (PLA) nanocomposites based on single and hybrid organic-modified montmorillonites were previously studied in terms of their morphologi-cal, thermal and fire performance. As surfactants of the organoclays influenced thecompatibility between the nanofillers and PLA with different degrees of clay plate-lets dispersion, the present work investigated the effect of these features in themechanical properties of PLA nanocomposites. PLA nanocomposites specimenswere analyzed by dynamic-mechanical-thermal analysis, which pointed outchanges in the viscoelastic behavior of the materials by the incorporation of theorganoclays, namely the increase of the storage modulus due to polymerchains movements rest riction and reinfor cement effects associated with the disper-sion of the nanofillers. Flexural and impact testing showed that hybridorganomontmorillonites containing ester ammonium and ethoxylated amineimproved PLA's ductility, toughness and impact resistance. This behavior wasexplained by the high level of compatibility and interaction between the surfactantsand PLA chains due to the polar groups in their structures. These organoclays cau-sed a transition on PLA's fracture from brittle to ductile in a way that the toughen-ing mechanism was explained by crazing and multi-shear banding induced by theplasticized interfacial region around these organoclays
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-04-04
2021
2021-04-16
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/343812
https://dx.doi.org/10.1002/app.50784
url https://hdl.handle.net/2117/343812
https://dx.doi.org/10.1002/app.50784
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-89787-P ESPUMAS POLIMERICAS MULTIFUNCIONALES BASADAS EN TERMOPLASTICOS DE ALTA TEMPERATURA
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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