Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content

Autores
Vega Baudrit, José; Sibaja Ballester, María; Vazquez, Patricia Graciela; Torregrosa Maciá, Rosa; Martín Martínez, José Miguel
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Thermoplastic polyurethane (TPU) adhesives containing nanosilicas with different specific surface area and silanol group content were prepared and characterized by FTIR spectroscopy, differential scanning calorimetry (DSC), thermogravimetry (TGA), X-ray diffraction, plate-plate rheology, dynamical–mechanical–thermal analysis (DMTA), transmission electron microscopy (TEM), and strain–stress test. Adhesive strength was obtained from T-peel tests of PVC/polyurethane adhesive joints. Formation of agglomerates of nanosilica particles within the polyurethane matrix were favoured by increasing the silanol content likely due to stronger hydrogen bond interactions between the silanol groups on the nanosilica over those between the polyurethane and the nanosilica. As a consequence, inter-urethane bonds formation rather than ester-urethane bonds were favoured, leaving the soft segment chains more free to interact between them. Thus, addition of nanosilica favoured the phase segregation in the thermoplastic polyurethane. The increase in specific surface area and silanol content in the nanosilica, generally enhanced the degree of phase separation in the polyurethane, being less marked for nanosilicas with more than 200 m2/g and 0.60 mmol SiOH/gsilica. On the other hand, the addition of the nanosilica improved the tensile strength and elongation at break, and the viscoelastic properties of the polyurethane. The immediate adhesive strength of PVC/polyurethane adhesive joints increased in the filled adhesives and it was determined by the rheological properties of the polyurethane–nanosilica mixtures. By increasing the time after joint formation, the crystallization of the polyurethane was produced giving higher adhesive strength and although a cohesive failure in the PVC was always obtained, a slight though progressive increase in joint strength was found with the passage of time with the ordering of the three systems (PU-0.45, PU-0.60 and PU-0.90) remaining unchanged with the PU-0.60 system the stronger and the PU-0.90 system the weaker. This is in agreement with the trends in the viscoelastic and mechanical properties of the filled adhesives.
Fil: Vega Baudrit, José. Universidad Nacional. Facultad de ciencias exactas y naturales. Laboratorio de polimeros; Costa Rica
Fil: Sibaja Ballester, María. Universidad Nacional. Facultad de ciencias exactas y naturales. Laboratorio de polimeros; Costa Rica
Fil: Vazquez, Patricia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Torregrosa-Macia, Rosa. Universidad de Alicante. Departamento de química inorgánica. Laboratorio de adhesión y adhesivos; España
Fil: Martın-Martınez, Jose Miguel. Universidad de Alicante. Departamento de química inorgánica. Laboratorio de adhesión y adhesivos; España
Materia
Polyurethane
Infrared Spectra
Rheology
Mechanical Properties of Adhesives
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:11336/16751
Acceder
id CONICETDig_1b299333da2c2a82eaccfb5aa25c79a6
oai_identifier_str oai:ri.conicet.gov.ar:11336/16751
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol contentVega Baudrit, JoséSibaja Ballester, MaríaVazquez, Patricia GracielaTorregrosa Maciá, RosaMartín Martínez, José MiguelPolyurethaneInfrared SpectraRheologyMechanical Properties of Adhesiveshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Thermoplastic polyurethane (TPU) adhesives containing nanosilicas with different specific surface area and silanol group content were prepared and characterized by FTIR spectroscopy, differential scanning calorimetry (DSC), thermogravimetry (TGA), X-ray diffraction, plate-plate rheology, dynamical–mechanical–thermal analysis (DMTA), transmission electron microscopy (TEM), and strain–stress test. Adhesive strength was obtained from T-peel tests of PVC/polyurethane adhesive joints. Formation of agglomerates of nanosilica particles within the polyurethane matrix were favoured by increasing the silanol content likely due to stronger hydrogen bond interactions between the silanol groups on the nanosilica over those between the polyurethane and the nanosilica. As a consequence, inter-urethane bonds formation rather than ester-urethane bonds were favoured, leaving the soft segment chains more free to interact between them. Thus, addition of nanosilica favoured the phase segregation in the thermoplastic polyurethane. The increase in specific surface area and silanol content in the nanosilica, generally enhanced the degree of phase separation in the polyurethane, being less marked for nanosilicas with more than 200 m2/g and 0.60 mmol SiOH/gsilica. On the other hand, the addition of the nanosilica improved the tensile strength and elongation at break, and the viscoelastic properties of the polyurethane. The immediate adhesive strength of PVC/polyurethane adhesive joints increased in the filled adhesives and it was determined by the rheological properties of the polyurethane–nanosilica mixtures. By increasing the time after joint formation, the crystallization of the polyurethane was produced giving higher adhesive strength and although a cohesive failure in the PVC was always obtained, a slight though progressive increase in joint strength was found with the passage of time with the ordering of the three systems (PU-0.45, PU-0.60 and PU-0.90) remaining unchanged with the PU-0.60 system the stronger and the PU-0.90 system the weaker. This is in agreement with the trends in the viscoelastic and mechanical properties of the filled adhesives.Fil: Vega Baudrit, José. Universidad Nacional. Facultad de ciencias exactas y naturales. Laboratorio de polimeros; Costa RicaFil: Sibaja Ballester, María. Universidad Nacional. Facultad de ciencias exactas y naturales. Laboratorio de polimeros; Costa RicaFil: Vazquez, Patricia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Torregrosa-Macia, Rosa. Universidad de Alicante. Departamento de química inorgánica. Laboratorio de adhesión y adhesivos; EspañaFil: Martın-Martınez, Jose Miguel. Universidad de Alicante. Departamento de química inorgánica. Laboratorio de adhesión y adhesivos; EspañaElsevier2007-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/16751Vega Baudrit, José; Sibaja Ballester, María; Vazquez, Patricia Graciela; Torregrosa Maciá, Rosa; Martín Martínez, José Miguel; Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content; Elsevier; International Journal Of Adhesion And Adhesives; 27; 6; 9-2007; 469-4760143-7496enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0143749606000819info:eu-repo/semantics/altIdentifier/doi/doi:10.1016/j.ijadhadh.2006.08.001info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:56:51Zoai:ri.conicet.gov.ar:11336/16751instacron: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:34982025-10-15 14:56:51.4CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
title Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
spellingShingle Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
Vega Baudrit, José
Polyurethane
Infrared Spectra
Rheology
Mechanical Properties of Adhesives
title_short Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
title_full Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
title_fullStr Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
title_full_unstemmed Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
title_sort Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content
dc.creator.none.fl_str_mv Vega Baudrit, José
Sibaja Ballester, María
Vazquez, Patricia Graciela
Torregrosa Maciá, Rosa
Martín Martínez, José Miguel
author Vega Baudrit, José
author_facet Vega Baudrit, José
Sibaja Ballester, María
Vazquez, Patricia Graciela
Torregrosa Maciá, Rosa
Martín Martínez, José Miguel
author_role author
author2 Sibaja Ballester, María
Vazquez, Patricia Graciela
Torregrosa Maciá, Rosa
Martín Martínez, José Miguel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Polyurethane
Infrared Spectra
Rheology
Mechanical Properties of Adhesives
topic Polyurethane
Infrared Spectra
Rheology
Mechanical Properties of Adhesives
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Thermoplastic polyurethane (TPU) adhesives containing nanosilicas with different specific surface area and silanol group content were prepared and characterized by FTIR spectroscopy, differential scanning calorimetry (DSC), thermogravimetry (TGA), X-ray diffraction, plate-plate rheology, dynamical–mechanical–thermal analysis (DMTA), transmission electron microscopy (TEM), and strain–stress test. Adhesive strength was obtained from T-peel tests of PVC/polyurethane adhesive joints. Formation of agglomerates of nanosilica particles within the polyurethane matrix were favoured by increasing the silanol content likely due to stronger hydrogen bond interactions between the silanol groups on the nanosilica over those between the polyurethane and the nanosilica. As a consequence, inter-urethane bonds formation rather than ester-urethane bonds were favoured, leaving the soft segment chains more free to interact between them. Thus, addition of nanosilica favoured the phase segregation in the thermoplastic polyurethane. The increase in specific surface area and silanol content in the nanosilica, generally enhanced the degree of phase separation in the polyurethane, being less marked for nanosilicas with more than 200 m2/g and 0.60 mmol SiOH/gsilica. On the other hand, the addition of the nanosilica improved the tensile strength and elongation at break, and the viscoelastic properties of the polyurethane. The immediate adhesive strength of PVC/polyurethane adhesive joints increased in the filled adhesives and it was determined by the rheological properties of the polyurethane–nanosilica mixtures. By increasing the time after joint formation, the crystallization of the polyurethane was produced giving higher adhesive strength and although a cohesive failure in the PVC was always obtained, a slight though progressive increase in joint strength was found with the passage of time with the ordering of the three systems (PU-0.45, PU-0.60 and PU-0.90) remaining unchanged with the PU-0.60 system the stronger and the PU-0.90 system the weaker. This is in agreement with the trends in the viscoelastic and mechanical properties of the filled adhesives.
Fil: Vega Baudrit, José. Universidad Nacional. Facultad de ciencias exactas y naturales. Laboratorio de polimeros; Costa Rica
Fil: Sibaja Ballester, María. Universidad Nacional. Facultad de ciencias exactas y naturales. Laboratorio de polimeros; Costa Rica
Fil: Vazquez, Patricia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Torregrosa-Macia, Rosa. Universidad de Alicante. Departamento de química inorgánica. Laboratorio de adhesión y adhesivos; España
Fil: Martın-Martınez, Jose Miguel. Universidad de Alicante. Departamento de química inorgánica. Laboratorio de adhesión y adhesivos; España
description Thermoplastic polyurethane (TPU) adhesives containing nanosilicas with different specific surface area and silanol group content were prepared and characterized by FTIR spectroscopy, differential scanning calorimetry (DSC), thermogravimetry (TGA), X-ray diffraction, plate-plate rheology, dynamical–mechanical–thermal analysis (DMTA), transmission electron microscopy (TEM), and strain–stress test. Adhesive strength was obtained from T-peel tests of PVC/polyurethane adhesive joints. Formation of agglomerates of nanosilica particles within the polyurethane matrix were favoured by increasing the silanol content likely due to stronger hydrogen bond interactions between the silanol groups on the nanosilica over those between the polyurethane and the nanosilica. As a consequence, inter-urethane bonds formation rather than ester-urethane bonds were favoured, leaving the soft segment chains more free to interact between them. Thus, addition of nanosilica favoured the phase segregation in the thermoplastic polyurethane. The increase in specific surface area and silanol content in the nanosilica, generally enhanced the degree of phase separation in the polyurethane, being less marked for nanosilicas with more than 200 m2/g and 0.60 mmol SiOH/gsilica. On the other hand, the addition of the nanosilica improved the tensile strength and elongation at break, and the viscoelastic properties of the polyurethane. The immediate adhesive strength of PVC/polyurethane adhesive joints increased in the filled adhesives and it was determined by the rheological properties of the polyurethane–nanosilica mixtures. By increasing the time after joint formation, the crystallization of the polyurethane was produced giving higher adhesive strength and although a cohesive failure in the PVC was always obtained, a slight though progressive increase in joint strength was found with the passage of time with the ordering of the three systems (PU-0.45, PU-0.60 and PU-0.90) remaining unchanged with the PU-0.60 system the stronger and the PU-0.90 system the weaker. This is in agreement with the trends in the viscoelastic and mechanical properties of the filled adhesives.
publishDate 2007
dc.date.none.fl_str_mv 2007-09
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/11336/16751
Vega Baudrit, José; Sibaja Ballester, María; Vazquez, Patricia Graciela; Torregrosa Maciá, Rosa; Martín Martínez, José Miguel; Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content; Elsevier; International Journal Of Adhesion And Adhesives; 27; 6; 9-2007; 469-476
0143-7496
url http://hdl.handle.net/11336/16751
identifier_str_mv Vega Baudrit, José; Sibaja Ballester, María; Vazquez, Patricia Graciela; Torregrosa Maciá, Rosa; Martín Martínez, José Miguel; Properties of thermoplastic polyurethane adhesives containing nanosilicas with different specific surface area and silanol content; Elsevier; International Journal Of Adhesion And Adhesives; 27; 6; 9-2007; 469-476
0143-7496
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0143749606000819
info:eu-repo/semantics/altIdentifier/doi/doi:10.1016/j.ijadhadh.2006.08.001
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
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score 13.22299

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