Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates

Autores
Peruzzo, Pablo José; Anbinder, Pablo Sebastián; Pardini, Oscar Ricardo; Vega, Jorge R.; Amalvy, Javier Ignacio
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Polyurethane (PU)-acrylic hybrid composites were prepared by emulsion polymerization of acrylic monomers in the presence of preformed PU chains containing polymerizable terminal vinyl groups. To study the effect of the nature of diisocyanate on the film's morphology and properties, composites were prepared from two different diisocyanates: tetramethylxylene diisocyanate and 4,4′-dicyclohexylmethane diisocyanate. The samples were then characterized using size exclusion chromatography, dynamic light scattering, transmission electron microscopy, Fourier-transformed infrared spectroscopy (FTIR) and small-angle X-ray scattering (SAXS), and the gel fraction content and mechanical properties of the films were also determined. The hybrid composites were found to be cross-linked systems that underwent changes in their particle and film morphologies with increasing acrylic content. The FTIR results revealed a good interaction between the PU and acrylic moieties, and SAXS experiments showed that systems with up to a 50 wt% acrylic component were homogeneous. An attempt to incorporate a higher amount of acrylic component resulted in phase-separated materials. The composition at which phase separation was observed was found to be strongly dependent on the diisocyanate structure. Although the properties of hybrid samples with lower acrylic contents were dependent on the diisocyanate used, samples with higher acrylic contents behaved similarly to those of pure acrylic regardless of the diisocyanate used for preparation.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ingeniería
Materia
Ingeniería
Ciencias Exactas
core-shell polymers
microphase separation
polyurethane-acrylic
waterborne dispersions
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/83982

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/83982
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylatesPeruzzo, Pablo JoséAnbinder, Pablo SebastiánPardini, Oscar RicardoVega, Jorge R.Amalvy, Javier IgnacioIngenieríaCiencias Exactascore-shell polymersmicrophase separationpolyurethane-acrylicwaterborne dispersionsPolyurethane (PU)-acrylic hybrid composites were prepared by emulsion polymerization of acrylic monomers in the presence of preformed PU chains containing polymerizable terminal vinyl groups. To study the effect of the nature of diisocyanate on the film's morphology and properties, composites were prepared from two different diisocyanates: tetramethylxylene diisocyanate and 4,4′-dicyclohexylmethane diisocyanate. The samples were then characterized using size exclusion chromatography, dynamic light scattering, transmission electron microscopy, Fourier-transformed infrared spectroscopy (FTIR) and small-angle X-ray scattering (SAXS), and the gel fraction content and mechanical properties of the films were also determined. The hybrid composites were found to be cross-linked systems that underwent changes in their particle and film morphologies with increasing acrylic content. The FTIR results revealed a good interaction between the PU and acrylic moieties, and SAXS experiments showed that systems with up to a 50 wt% acrylic component were homogeneous. An attempt to incorporate a higher amount of acrylic component resulted in phase-separated materials. The composition at which phase separation was observed was found to be strongly dependent on the diisocyanate structure. Although the properties of hybrid samples with lower acrylic contents were dependent on the diisocyanate used, samples with higher acrylic contents behaved similarly to those of pure acrylic regardless of the diisocyanate used for preparation.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasFacultad de Ingeniería2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf232-239http://sedici.unlp.edu.ar/handle/10915/83982enginfo:eu-repo/semantics/altIdentifier/issn/0032-3896info:eu-repo/semantics/altIdentifier/doi/10.1038/pj.2011.111info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:05Zoai:sedici.unlp.edu.ar:10915/83982Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:05.463SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
title Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
spellingShingle Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
Peruzzo, Pablo José
Ingeniería
Ciencias Exactas
core-shell polymers
microphase separation
polyurethane-acrylic
waterborne dispersions
title_short Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
title_full Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
title_fullStr Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
title_full_unstemmed Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
title_sort Influence of diisocyanate structure on the morphology and properties of waterborne polyurethane-acrylates
dc.creator.none.fl_str_mv Peruzzo, Pablo José
Anbinder, Pablo Sebastián
Pardini, Oscar Ricardo
Vega, Jorge R.
Amalvy, Javier Ignacio
author Peruzzo, Pablo José
author_facet Peruzzo, Pablo José
Anbinder, Pablo Sebastián
Pardini, Oscar Ricardo
Vega, Jorge R.
Amalvy, Javier Ignacio
author_role author
author2 Anbinder, Pablo Sebastián
Pardini, Oscar Ricardo
Vega, Jorge R.
Amalvy, Javier Ignacio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ingeniería
Ciencias Exactas
core-shell polymers
microphase separation
polyurethane-acrylic
waterborne dispersions
topic Ingeniería
Ciencias Exactas
core-shell polymers
microphase separation
polyurethane-acrylic
waterborne dispersions
dc.description.none.fl_txt_mv Polyurethane (PU)-acrylic hybrid composites were prepared by emulsion polymerization of acrylic monomers in the presence of preformed PU chains containing polymerizable terminal vinyl groups. To study the effect of the nature of diisocyanate on the film's morphology and properties, composites were prepared from two different diisocyanates: tetramethylxylene diisocyanate and 4,4′-dicyclohexylmethane diisocyanate. The samples were then characterized using size exclusion chromatography, dynamic light scattering, transmission electron microscopy, Fourier-transformed infrared spectroscopy (FTIR) and small-angle X-ray scattering (SAXS), and the gel fraction content and mechanical properties of the films were also determined. The hybrid composites were found to be cross-linked systems that underwent changes in their particle and film morphologies with increasing acrylic content. The FTIR results revealed a good interaction between the PU and acrylic moieties, and SAXS experiments showed that systems with up to a 50 wt% acrylic component were homogeneous. An attempt to incorporate a higher amount of acrylic component resulted in phase-separated materials. The composition at which phase separation was observed was found to be strongly dependent on the diisocyanate structure. Although the properties of hybrid samples with lower acrylic contents were dependent on the diisocyanate used, samples with higher acrylic contents behaved similarly to those of pure acrylic regardless of the diisocyanate used for preparation.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Facultad de Ingeniería
description Polyurethane (PU)-acrylic hybrid composites were prepared by emulsion polymerization of acrylic monomers in the presence of preformed PU chains containing polymerizable terminal vinyl groups. To study the effect of the nature of diisocyanate on the film's morphology and properties, composites were prepared from two different diisocyanates: tetramethylxylene diisocyanate and 4,4′-dicyclohexylmethane diisocyanate. The samples were then characterized using size exclusion chromatography, dynamic light scattering, transmission electron microscopy, Fourier-transformed infrared spectroscopy (FTIR) and small-angle X-ray scattering (SAXS), and the gel fraction content and mechanical properties of the films were also determined. The hybrid composites were found to be cross-linked systems that underwent changes in their particle and film morphologies with increasing acrylic content. The FTIR results revealed a good interaction between the PU and acrylic moieties, and SAXS experiments showed that systems with up to a 50 wt% acrylic component were homogeneous. An attempt to incorporate a higher amount of acrylic component resulted in phase-separated materials. The composition at which phase separation was observed was found to be strongly dependent on the diisocyanate structure. Although the properties of hybrid samples with lower acrylic contents were dependent on the diisocyanate used, samples with higher acrylic contents behaved similarly to those of pure acrylic regardless of the diisocyanate used for preparation.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/83982
url http://sedici.unlp.edu.ar/handle/10915/83982
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0032-3896
info:eu-repo/semantics/altIdentifier/doi/10.1038/pj.2011.111
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
232-239
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
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instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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