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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/16751
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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 Técnicas2025-09-29T10:00:53Zoai: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:34982025-09-29 10:00:53.802CONICET 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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1844613795537747968 |
score |
13.070432 |