Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities

Preformed polystyrene-co-butylacrylate (PScoBu) core-shell particles and polystyrene microspheres as well as amine-terminated butadiene nitrile (ATBN) rubber have been used for modification of both rigid and more flexible crosslinked DGEBA-based epoxy networks having significantly different crosslin...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Ormaetxea, M., Forcada, J., Mugika, F., Valea, A., Martin, M.D., Marieta, C., Goyanes, S., Mondragon, I.
Formato: JOUR
Materias:
Atomic force microscopy
Crosslinking
Fracture toughness
Morphology
Rheology
Rubber
Scanning electron microscopy
Thermodynamic properties
Crosslink densities
Epoxy resins
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222461_v36_n4_p845_Ormaetxea
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00222461_v36_n4_p845_Ormaetxea
record_format dspace
spelling todo:paper_00222461_v36_n4_p845_Ormaetxea2023-10-03T14:28:59Z Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities Ormaetxea, M. Forcada, J. Mugika, F. Valea, A. Martin, M.D. Marieta, C. Goyanes, S. Mondragon, I. Atomic force microscopy Crosslinking Fracture toughness Morphology Rheology Rubber Scanning electron microscopy Thermodynamic properties Crosslink densities Epoxy resins Preformed polystyrene-co-butylacrylate (PScoBu) core-shell particles and polystyrene microspheres as well as amine-terminated butadiene nitrile (ATBN) rubber have been used for modification of both rigid and more flexible crosslinked DGEBA-based epoxy networks having significantly different crosslink densities. Some variations in cure kinetics have been shown by both thermal and rheological measurements. Independently of the crosslink density of the neat epoxy matrix, function of the cycloaliphatic or aliphatic hardener used, the toughening effect via core-shell modification has been found as good as that for rubber modification but with a better retention of thermal properties. Results are investigated as a function of the morphologies obtained by scanning electron microscopy (SEM) but also by atomic force microscopy (AFM). Larger fracture toughness was obtained for every-unmodified and modified-epoxy matrices cured with the aliphatic hardener as a consequence of the lower crosslink density of the corresponding mixtures. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00222461_v36_n4_p845_Ormaetxea
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Atomic force microscopy
Crosslinking
Fracture toughness
Morphology
Rheology
Rubber
Scanning electron microscopy
Thermodynamic properties
Crosslink densities
Epoxy resins
spellingShingle Atomic force microscopy
Crosslinking
Fracture toughness
Morphology
Rheology
Rubber
Scanning electron microscopy
Thermodynamic properties
Crosslink densities
Epoxy resins
Ormaetxea, M.
Forcada, J.
Mugika, F.
Valea, A.
Martin, M.D.
Marieta, C.
Goyanes, S.
Mondragon, I.
Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
topic_facet Atomic force microscopy
Crosslinking
Fracture toughness
Morphology
Rheology
Rubber
Scanning electron microscopy
Thermodynamic properties
Crosslink densities
Epoxy resins
description Preformed polystyrene-co-butylacrylate (PScoBu) core-shell particles and polystyrene microspheres as well as amine-terminated butadiene nitrile (ATBN) rubber have been used for modification of both rigid and more flexible crosslinked DGEBA-based epoxy networks having significantly different crosslink densities. Some variations in cure kinetics have been shown by both thermal and rheological measurements. Independently of the crosslink density of the neat epoxy matrix, function of the cycloaliphatic or aliphatic hardener used, the toughening effect via core-shell modification has been found as good as that for rubber modification but with a better retention of thermal properties. Results are investigated as a function of the morphologies obtained by scanning electron microscopy (SEM) but also by atomic force microscopy (AFM). Larger fracture toughness was obtained for every-unmodified and modified-epoxy matrices cured with the aliphatic hardener as a consequence of the lower crosslink density of the corresponding mixtures.
format JOUR
author Ormaetxea, M.
Forcada, J.
Mugika, F.
Valea, A.
Martin, M.D.
Marieta, C.
Goyanes, S.
Mondragon, I.
author_facet Ormaetxea, M.
Forcada, J.
Mugika, F.
Valea, A.
Martin, M.D.
Marieta, C.
Goyanes, S.
Mondragon, I.
author_sort Ormaetxea, M.
title Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
title_short Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
title_full Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
title_fullStr Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
title_full_unstemmed Ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
title_sort ultimate properties of rubber and core-shell modified epoxy matrices with different chain flexibilities
url http://hdl.handle.net/20.500.12110/paper_00222461_v36_n4_p845_Ormaetxea
work_keys_str_mv AT ormaetxeam ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT forcadaj ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT mugikaf ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT valeaa ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT martinmd ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT marietac ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT goyaness ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
AT mondragoni ultimatepropertiesofrubberandcoreshellmodifiedepoxymatriceswithdifferentchainflexibilities
_version_ 1807318382283849728

Ejemplares similares