Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants

Autores
Pellice, Sergio Antonio; Fasce, Diana Patricia; Williams, Roberto Juan Jose
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A polyhedral oligomeric silsesquioxane (POSS), consisting mainly of a mixture of octahedra, nonahedra, and decahedra with bulky and flexible organic sub-stituents, with three secondary hydroxyls per organic group, was used to modify epoxy networks produced by the homopolymerization of diglycidyl ether of bisphenol A in the presence of benzyldimethylamine. Several physical, thermal, and mechanical properties of the cured materials containing 0, 10, 30, and 50 wt % POSS were determined. The addition of POSS increased the elastic modulus and the yield stress measured in uniaxial compression tests, mainly because of the increase in the cohesive energy density produced by hydrogen bonding through the hydroxyl groups. A constant yield stress/elastic modulus ratio equal to 0.03 was observed for different POSS concentrations and test temperatures. The glass-transition temperature decreased with POSS addition because of the flexibility of organic branches present in the POSS structure and the decrease in the crosslink density (determined from the rubbery modulus). Although a combination of a reduction in the glass-transition temperature (plasticization) with an increase in the glassy modulus (antiplasticization) is a well-known phenomenon, what is original is that in this case it was not the result of the suppression (or reduction in intensity) of subglass relaxations but was produced by an increase in the cohesive energy density.
Fil: Pellice, Sergio Antonio. 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: Fasce, Diana Patricia. 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: Williams, Roberto Juan Jose. 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
Crosslinking
Epoxy
Networks
Polyhedral Oligomeric Silsesquioxane (Poss)
Thermosets
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:11336/77070
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/77070
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituantsPellice, Sergio AntonioFasce, Diana PatriciaWilliams, Roberto Juan JoseCrosslinkingEpoxyNetworksPolyhedral Oligomeric Silsesquioxane (Poss)Thermosetshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2A polyhedral oligomeric silsesquioxane (POSS), consisting mainly of a mixture of octahedra, nonahedra, and decahedra with bulky and flexible organic sub-stituents, with three secondary hydroxyls per organic group, was used to modify epoxy networks produced by the homopolymerization of diglycidyl ether of bisphenol A in the presence of benzyldimethylamine. Several physical, thermal, and mechanical properties of the cured materials containing 0, 10, 30, and 50 wt % POSS were determined. The addition of POSS increased the elastic modulus and the yield stress measured in uniaxial compression tests, mainly because of the increase in the cohesive energy density produced by hydrogen bonding through the hydroxyl groups. A constant yield stress/elastic modulus ratio equal to 0.03 was observed for different POSS concentrations and test temperatures. The glass-transition temperature decreased with POSS addition because of the flexibility of organic branches present in the POSS structure and the decrease in the crosslink density (determined from the rubbery modulus). Although a combination of a reduction in the glass-transition temperature (plasticization) with an increase in the glassy modulus (antiplasticization) is a well-known phenomenon, what is original is that in this case it was not the result of the suppression (or reduction in intensity) of subglass relaxations but was produced by an increase in the cohesive energy density.Fil: Pellice, Sergio Antonio. 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: Fasce, Diana Patricia. 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: Williams, Roberto Juan Jose. 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; ArgentinaJohn Wiley & Sons Inc2003-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/77070Pellice, Sergio Antonio; Fasce, Diana Patricia; Williams, Roberto Juan Jose; Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 41; 13; 1-7-2003; 1451-14610887-6266CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.10494info:eu-repo/semantics/altIdentifier/doi/10.1002/polb.10494info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:59Zoai:ri.conicet.gov.ar:11336/77070instacron: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 09:51:00.128CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
title Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
spellingShingle Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
Pellice, Sergio Antonio
Crosslinking
Epoxy
Networks
Polyhedral Oligomeric Silsesquioxane (Poss)
Thermosets
title_short Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
title_full Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
title_fullStr Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
title_full_unstemmed Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
title_sort Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants
dc.creator.none.fl_str_mv Pellice, Sergio Antonio
Fasce, Diana Patricia
Williams, Roberto Juan Jose
author Pellice, Sergio Antonio
author_facet Pellice, Sergio Antonio
Fasce, Diana Patricia
Williams, Roberto Juan Jose
author_role author
author2 Fasce, Diana Patricia
Williams, Roberto Juan Jose
author2_role author
author
dc.subject.none.fl_str_mv Crosslinking
Epoxy
Networks
Polyhedral Oligomeric Silsesquioxane (Poss)
Thermosets
topic Crosslinking
Epoxy
Networks
Polyhedral Oligomeric Silsesquioxane (Poss)
Thermosets
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A polyhedral oligomeric silsesquioxane (POSS), consisting mainly of a mixture of octahedra, nonahedra, and decahedra with bulky and flexible organic sub-stituents, with three secondary hydroxyls per organic group, was used to modify epoxy networks produced by the homopolymerization of diglycidyl ether of bisphenol A in the presence of benzyldimethylamine. Several physical, thermal, and mechanical properties of the cured materials containing 0, 10, 30, and 50 wt % POSS were determined. The addition of POSS increased the elastic modulus and the yield stress measured in uniaxial compression tests, mainly because of the increase in the cohesive energy density produced by hydrogen bonding through the hydroxyl groups. A constant yield stress/elastic modulus ratio equal to 0.03 was observed for different POSS concentrations and test temperatures. The glass-transition temperature decreased with POSS addition because of the flexibility of organic branches present in the POSS structure and the decrease in the crosslink density (determined from the rubbery modulus). Although a combination of a reduction in the glass-transition temperature (plasticization) with an increase in the glassy modulus (antiplasticization) is a well-known phenomenon, what is original is that in this case it was not the result of the suppression (or reduction in intensity) of subglass relaxations but was produced by an increase in the cohesive energy density.
Fil: Pellice, Sergio Antonio. 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: Fasce, Diana Patricia. 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: Williams, Roberto Juan Jose. 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 A polyhedral oligomeric silsesquioxane (POSS), consisting mainly of a mixture of octahedra, nonahedra, and decahedra with bulky and flexible organic sub-stituents, with three secondary hydroxyls per organic group, was used to modify epoxy networks produced by the homopolymerization of diglycidyl ether of bisphenol A in the presence of benzyldimethylamine. Several physical, thermal, and mechanical properties of the cured materials containing 0, 10, 30, and 50 wt % POSS were determined. The addition of POSS increased the elastic modulus and the yield stress measured in uniaxial compression tests, mainly because of the increase in the cohesive energy density produced by hydrogen bonding through the hydroxyl groups. A constant yield stress/elastic modulus ratio equal to 0.03 was observed for different POSS concentrations and test temperatures. The glass-transition temperature decreased with POSS addition because of the flexibility of organic branches present in the POSS structure and the decrease in the crosslink density (determined from the rubbery modulus). Although a combination of a reduction in the glass-transition temperature (plasticization) with an increase in the glassy modulus (antiplasticization) is a well-known phenomenon, what is original is that in this case it was not the result of the suppression (or reduction in intensity) of subglass relaxations but was produced by an increase in the cohesive energy density.
publishDate 2003
dc.date.none.fl_str_mv 2003-07-01
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/11336/77070
Pellice, Sergio Antonio; Fasce, Diana Patricia; Williams, Roberto Juan Jose; Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 41; 13; 1-7-2003; 1451-1461
0887-6266
CONICET Digital
CONICET
url http://hdl.handle.net/11336/77070
identifier_str_mv Pellice, Sergio Antonio; Fasce, Diana Patricia; Williams, Roberto Juan Jose; Properties of epoxy networks derived from the reaction of diglycidyl ether of bisphenol a with polyhedral oligomeric silsesquioxanes bearing OH-functionalized organic substituants; John Wiley & Sons Inc; Journal of Polymer Science Part B: Polymer Physics; 41; 13; 1-7-2003; 1451-1461
0887-6266
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/polb.10494
info:eu-repo/semantics/altIdentifier/doi/10.1002/polb.10494
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
dc.publisher.none.fl_str_mv John Wiley & Sons Inc
publisher.none.fl_str_mv John Wiley & Sons Inc
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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