Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy

Autores
Aranguren, Mirta Ines; Marcovich, Norma Esther; Salgueiro, Walter Alberto; Somoza, Alberto Horacio
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A study of the effect of the addition of cellulose nanocrystals on the properties of a polyurethane matrix was carried out. To this aim, mechanical and dynamic mechanical tests together with positron annihilation lifetime spectroscopy (PALS) were used. The rheological response of the unreacted liquid suspensions indicates strong interactions between nanocrystals and polymer, showing a viscoelastic solid-like behavior at low cellulose concentration. The study of the cured elastomers revealed a strong dependence of their properties on cellulose content, with a peculiar behavior appearing below the percolation threshold (∼0.8 wt.%). PALS studies revealed that, for the neat polyurethane and nanocomposites, the free nanohole volume value remains unchanged. Conversely, the fractional free volume is strongly dependent on nanocellulose concentration. This parameter shows very good correlation with mechanical ones (Young´s and storage moduli) related to the elastomer rigidity. Results are analyzed in terms of the interaction between the polyurethane chains that become attached to the cellulose nanocrystals through strong physical H-bonding and covalent linkages.
Fil: Aranguren, Mirta Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
Fil: Marcovich, Norma Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
Fil: Salgueiro, Walter Alberto. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Materia
Cellulose Nanocrystals
Polyurethane Nanocomposites
Positron Annihilation
Mechanical Properties
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/2351
Acceder
id CONICETDig_af03517d38ebcc85df53185daab7b14c
oai_identifier_str oai:ri.conicet.gov.ar:11336/2351
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopyAranguren, Mirta InesMarcovich, Norma EstherSalgueiro, Walter AlbertoSomoza, Alberto HoracioCellulose NanocrystalsPolyurethane NanocompositesPositron AnnihilationMechanical Propertieshttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A study of the effect of the addition of cellulose nanocrystals on the properties of a polyurethane matrix was carried out. To this aim, mechanical and dynamic mechanical tests together with positron annihilation lifetime spectroscopy (PALS) were used. The rheological response of the unreacted liquid suspensions indicates strong interactions between nanocrystals and polymer, showing a viscoelastic solid-like behavior at low cellulose concentration. The study of the cured elastomers revealed a strong dependence of their properties on cellulose content, with a peculiar behavior appearing below the percolation threshold (∼0.8 wt.%). PALS studies revealed that, for the neat polyurethane and nanocomposites, the free nanohole volume value remains unchanged. Conversely, the fractional free volume is strongly dependent on nanocellulose concentration. This parameter shows very good correlation with mechanical ones (Young´s and storage moduli) related to the elastomer rigidity. Results are analyzed in terms of the interaction between the polyurethane chains that become attached to the cellulose nanocrystals through strong physical H-bonding and covalent linkages.Fil: Aranguren, Mirta Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; ArgentinaFil: Marcovich, Norma Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; ArgentinaFil: Salgueiro, Walter Alberto. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaElsevier2012-08-24info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2351Aranguren, Mirta Ines; Marcovich, Norma Esther; Salgueiro, Walter Alberto; Somoza, Alberto Horacio; Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy; Elsevier; Polymer Testing; 32; 1; 24-8-2012; 115-1220142-9418enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.polymertesting.2012.08.014info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0142941812001638info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:15:30Zoai:ri.conicet.gov.ar:11336/2351instacron: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 11:15:30.38CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
title Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
spellingShingle Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
Aranguren, Mirta Ines
Cellulose Nanocrystals
Polyurethane Nanocomposites
Positron Annihilation
Mechanical Properties
title_short Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
title_full Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
title_fullStr Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
title_full_unstemmed Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
title_sort Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy
dc.creator.none.fl_str_mv Aranguren, Mirta Ines
Marcovich, Norma Esther
Salgueiro, Walter Alberto
Somoza, Alberto Horacio
author Aranguren, Mirta Ines
author_facet Aranguren, Mirta Ines
Marcovich, Norma Esther
Salgueiro, Walter Alberto
Somoza, Alberto Horacio
author_role author
author2 Marcovich, Norma Esther
Salgueiro, Walter Alberto
Somoza, Alberto Horacio
author2_role author
author
author
dc.subject.none.fl_str_mv Cellulose Nanocrystals
Polyurethane Nanocomposites
Positron Annihilation
Mechanical Properties
topic Cellulose Nanocrystals
Polyurethane Nanocomposites
Positron Annihilation
Mechanical Properties
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A study of the effect of the addition of cellulose nanocrystals on the properties of a polyurethane matrix was carried out. To this aim, mechanical and dynamic mechanical tests together with positron annihilation lifetime spectroscopy (PALS) were used. The rheological response of the unreacted liquid suspensions indicates strong interactions between nanocrystals and polymer, showing a viscoelastic solid-like behavior at low cellulose concentration. The study of the cured elastomers revealed a strong dependence of their properties on cellulose content, with a peculiar behavior appearing below the percolation threshold (∼0.8 wt.%). PALS studies revealed that, for the neat polyurethane and nanocomposites, the free nanohole volume value remains unchanged. Conversely, the fractional free volume is strongly dependent on nanocellulose concentration. This parameter shows very good correlation with mechanical ones (Young´s and storage moduli) related to the elastomer rigidity. Results are analyzed in terms of the interaction between the polyurethane chains that become attached to the cellulose nanocrystals through strong physical H-bonding and covalent linkages.
Fil: Aranguren, Mirta Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
Fil: Marcovich, Norma Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina
Fil: Salgueiro, Walter Alberto. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Somoza, Alberto Horacio. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Exactas. Instituto de Fisica de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tandil; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
description A study of the effect of the addition of cellulose nanocrystals on the properties of a polyurethane matrix was carried out. To this aim, mechanical and dynamic mechanical tests together with positron annihilation lifetime spectroscopy (PALS) were used. The rheological response of the unreacted liquid suspensions indicates strong interactions between nanocrystals and polymer, showing a viscoelastic solid-like behavior at low cellulose concentration. The study of the cured elastomers revealed a strong dependence of their properties on cellulose content, with a peculiar behavior appearing below the percolation threshold (∼0.8 wt.%). PALS studies revealed that, for the neat polyurethane and nanocomposites, the free nanohole volume value remains unchanged. Conversely, the fractional free volume is strongly dependent on nanocellulose concentration. This parameter shows very good correlation with mechanical ones (Young´s and storage moduli) related to the elastomer rigidity. Results are analyzed in terms of the interaction between the polyurethane chains that become attached to the cellulose nanocrystals through strong physical H-bonding and covalent linkages.
publishDate 2012
dc.date.none.fl_str_mv 2012-08-24
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/11336/2351
Aranguren, Mirta Ines; Marcovich, Norma Esther; Salgueiro, Walter Alberto; Somoza, Alberto Horacio; Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy; Elsevier; Polymer Testing; 32; 1; 24-8-2012; 115-122
0142-9418
url http://hdl.handle.net/11336/2351
identifier_str_mv Aranguren, Mirta Ines; Marcovich, Norma Esther; Salgueiro, Walter Alberto; Somoza, Alberto Horacio; Effect of the nano-cellulose content on the properties of reinforced polyurethanes. A study using mechanical tests and positron annihilation spectroscopy; Elsevier; Polymer Testing; 32; 1; 24-8-2012; 115-122
0142-9418
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.polymertesting.2012.08.014
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0142941812001638
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
_version_ 1846781589363621888
score 12.982451

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