Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane

Autores
Auad, María L.; Richardson, Tara; Orts, Williams J.; Medeiros, Eliton S.; Mattoso, Luiz H.C.; Mosiewicki, Mirna Alejandra; Marcovich, Norma Esther; Aranguren, Mirta Ines
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Segmented polyurethanes exhibiting shape memory properties were modified by the addition of polyaniline (PANI)-coated cellulose nanofibrils (CNFs). The two-phase structure of the polymer is responsible for the material's ability to ‘remember’ and autonomously recover its original shape after being deformed in response to an external thermal stimulus. PANI was grown on the surface of the CNFs via in situ polymerization. Modified nanocrystals were added to the segmented polyurethane in concentrations ranging from 0 to 15 wt%. The changes in the material properties associated with the percolation of the coated fibrils appear at higher concentrations than previously observed for non-modified CNFs, which suggests that fibril agglomeration is occurring due to the PANI coating. The shape memory behavior of the composites is maintained at about the same level as that of the unfilled polyurethane only up to 4 wt% of fibrils. At higher concentrations, the rigidity of the nanofibrils as well as their interaction with the hard-segment phase and the increasing difficulty of dispersing them in the polymer collaborate to produce early breakage of the specimens when stretched at temperatures above the melting point of the soft segments.
Fil: Auad, María L.. Auburn University; Estados Unidos
Fil: Richardson, Tara. Auburn University; Estados Unidos
Fil: Orts, Williams J.. United States Department Of Agriculture; Estados Unidos
Fil: Medeiros, Eliton S.. United States Department Of Agriculture; Estados Unidos. Universidade Federal da Paraíba; Brasil
Fil: Mattoso, Luiz H.C.. Embrapa Instrumentacao Agropecuaria; Brasil
Fil: Mosiewicki, Mirna 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. Auburn University; Estados Unidos
Fil: Marcovich, Norma Esther. 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: Aranguren, Mirta Ines. 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
Materia
Smart Materials
Nanocomposites
Cellulose
Polyaniline
Shape Memory
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:11336/16023
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/16023
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethaneAuad, María L.Richardson, TaraOrts, Williams J.Medeiros, Eliton S.Mattoso, Luiz H.C.Mosiewicki, Mirna AlejandraMarcovich, Norma EstherAranguren, Mirta InesSmart MaterialsNanocompositesCellulosePolyanilineShape Memoryhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Segmented polyurethanes exhibiting shape memory properties were modified by the addition of polyaniline (PANI)-coated cellulose nanofibrils (CNFs). The two-phase structure of the polymer is responsible for the material's ability to ‘remember’ and autonomously recover its original shape after being deformed in response to an external thermal stimulus. PANI was grown on the surface of the CNFs via in situ polymerization. Modified nanocrystals were added to the segmented polyurethane in concentrations ranging from 0 to 15 wt%. The changes in the material properties associated with the percolation of the coated fibrils appear at higher concentrations than previously observed for non-modified CNFs, which suggests that fibril agglomeration is occurring due to the PANI coating. The shape memory behavior of the composites is maintained at about the same level as that of the unfilled polyurethane only up to 4 wt% of fibrils. At higher concentrations, the rigidity of the nanofibrils as well as their interaction with the hard-segment phase and the increasing difficulty of dispersing them in the polymer collaborate to produce early breakage of the specimens when stretched at temperatures above the melting point of the soft segments.Fil: Auad, María L.. Auburn University; Estados UnidosFil: Richardson, Tara. Auburn University; Estados UnidosFil: Orts, Williams J.. United States Department Of Agriculture; Estados UnidosFil: Medeiros, Eliton S.. United States Department Of Agriculture; Estados Unidos. Universidade Federal da Paraíba; BrasilFil: Mattoso, Luiz H.C.. Embrapa Instrumentacao Agropecuaria; BrasilFil: Mosiewicki, Mirna 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. Auburn University; Estados UnidosFil: Marcovich, Norma Esther. 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: Aranguren, Mirta Ines. 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; ArgentinaSoc Chemical Industry2011-05-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/16023Auad, María L.; Richardson, Tara; Orts, Williams J.; Medeiros, Eliton S.; Mattoso, Luiz H.C.; et al.; Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane; Soc Chemical Industry; Polymer International; 60; 5; 24-5-2011; 743-7501097-0126enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pi.3004/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/pi.3004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:21Zoai:ri.conicet.gov.ar:11336/16023instacron: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:34982025-09-03 10:00:21.321CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
title Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
spellingShingle Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
Auad, María L.
Smart Materials
Nanocomposites
Cellulose
Polyaniline
Shape Memory
title_short Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
title_full Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
title_fullStr Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
title_full_unstemmed Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
title_sort Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane
dc.creator.none.fl_str_mv Auad, María L.
Richardson, Tara
Orts, Williams J.
Medeiros, Eliton S.
Mattoso, Luiz H.C.
Mosiewicki, Mirna Alejandra
Marcovich, Norma Esther
Aranguren, Mirta Ines
author Auad, María L.
author_facet Auad, María L.
Richardson, Tara
Orts, Williams J.
Medeiros, Eliton S.
Mattoso, Luiz H.C.
Mosiewicki, Mirna Alejandra
Marcovich, Norma Esther
Aranguren, Mirta Ines
author_role author
author2 Richardson, Tara
Orts, Williams J.
Medeiros, Eliton S.
Mattoso, Luiz H.C.
Mosiewicki, Mirna Alejandra
Marcovich, Norma Esther
Aranguren, Mirta Ines
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Smart Materials
Nanocomposites
Cellulose
Polyaniline
Shape Memory
topic Smart Materials
Nanocomposites
Cellulose
Polyaniline
Shape Memory
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Segmented polyurethanes exhibiting shape memory properties were modified by the addition of polyaniline (PANI)-coated cellulose nanofibrils (CNFs). The two-phase structure of the polymer is responsible for the material's ability to ‘remember’ and autonomously recover its original shape after being deformed in response to an external thermal stimulus. PANI was grown on the surface of the CNFs via in situ polymerization. Modified nanocrystals were added to the segmented polyurethane in concentrations ranging from 0 to 15 wt%. The changes in the material properties associated with the percolation of the coated fibrils appear at higher concentrations than previously observed for non-modified CNFs, which suggests that fibril agglomeration is occurring due to the PANI coating. The shape memory behavior of the composites is maintained at about the same level as that of the unfilled polyurethane only up to 4 wt% of fibrils. At higher concentrations, the rigidity of the nanofibrils as well as their interaction with the hard-segment phase and the increasing difficulty of dispersing them in the polymer collaborate to produce early breakage of the specimens when stretched at temperatures above the melting point of the soft segments.
Fil: Auad, María L.. Auburn University; Estados Unidos
Fil: Richardson, Tara. Auburn University; Estados Unidos
Fil: Orts, Williams J.. United States Department Of Agriculture; Estados Unidos
Fil: Medeiros, Eliton S.. United States Department Of Agriculture; Estados Unidos. Universidade Federal da Paraíba; Brasil
Fil: Mattoso, Luiz H.C.. Embrapa Instrumentacao Agropecuaria; Brasil
Fil: Mosiewicki, Mirna 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. Auburn University; Estados Unidos
Fil: Marcovich, Norma Esther. 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: Aranguren, Mirta Ines. 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
description Segmented polyurethanes exhibiting shape memory properties were modified by the addition of polyaniline (PANI)-coated cellulose nanofibrils (CNFs). The two-phase structure of the polymer is responsible for the material's ability to ‘remember’ and autonomously recover its original shape after being deformed in response to an external thermal stimulus. PANI was grown on the surface of the CNFs via in situ polymerization. Modified nanocrystals were added to the segmented polyurethane in concentrations ranging from 0 to 15 wt%. The changes in the material properties associated with the percolation of the coated fibrils appear at higher concentrations than previously observed for non-modified CNFs, which suggests that fibril agglomeration is occurring due to the PANI coating. The shape memory behavior of the composites is maintained at about the same level as that of the unfilled polyurethane only up to 4 wt% of fibrils. At higher concentrations, the rigidity of the nanofibrils as well as their interaction with the hard-segment phase and the increasing difficulty of dispersing them in the polymer collaborate to produce early breakage of the specimens when stretched at temperatures above the melting point of the soft segments.
publishDate 2011
dc.date.none.fl_str_mv 2011-05-24
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/11336/16023
Auad, María L.; Richardson, Tara; Orts, Williams J.; Medeiros, Eliton S.; Mattoso, Luiz H.C.; et al.; Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane; Soc Chemical Industry; Polymer International; 60; 5; 24-5-2011; 743-750
1097-0126
url http://hdl.handle.net/11336/16023
identifier_str_mv Auad, María L.; Richardson, Tara; Orts, Williams J.; Medeiros, Eliton S.; Mattoso, Luiz H.C.; et al.; Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane; Soc Chemical Industry; Polymer International; 60; 5; 24-5-2011; 743-750
1097-0126
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pi.3004/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1002/pi.3004
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
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Soc Chemical Industry
publisher.none.fl_str_mv Soc Chemical Industry
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 13.13397

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