Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures

A new dual-curing, solvent-free process is described for the preparation of tailor-made materials from off-stoichiometric amine-acrylate formulations. The first stage reaction is a self-limiting click aza-Michael addition between multifunctional amine and acrylate monomers with an excess of acrylate...

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Autores: Gonzalez, Gustavo, Fernández Francos, Xavier|||0000-0002-3492-2922, Serra Albet, Maria Àngels|||0000-0003-1387-0358, Sangermano, Marco, Ramis Juan, Xavier|||0000-0003-2550-7185
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/79595
Acceso en línea:https://hdl.handle.net/2117/79595
https://dx.doi.org/10.1039/c5py00906e
Access Level:acceso abierto
Palabra clave:Heat resistant plastics
Hyperbranched poly(ethyleneimine)s
Epoxy thermosets
Networks
Cure
Plàstics termostables
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
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spelling Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixturesGonzalez, GustavoFernández Francos, Xavier|||0000-0002-3492-2922Serra Albet, Maria Àngels|||0000-0003-1387-0358Sangermano, MarcoRamis Juan, Xavier|||0000-0003-2550-7185Heat resistant plasticsHyperbranched poly(ethyleneimine)sEpoxy thermosetsNetworksCurePlàstics termostablesÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímersA new dual-curing, solvent-free process is described for the preparation of tailor-made materials from off-stoichiometric amine-acrylate formulations. The first stage reaction is a self-limiting click aza-Michael addition between multifunctional amine and acrylate monomers with an excess of acrylate groups. The second stage reaction is a photoinduced radical polymerization of the unreacted acrylate groups. By selecting the structure of the monomers and the stoichiometry of the formulations, mechanical and thermal characteristics of the intermediate and final materials can be tuned. The materials obtained after the first curing stage can be gelled or ungelled and loosely or tightly crosslinked at the end of the second curing stage. The methodology used allows to obtain storable and processable intermediate polymers and final networks with optimum properties for different applications. The presence of amines in the reaction medium overcomes the intrinsic oxygen inhibition of acrylate free-radical polymerizations, resulting in a quasi complete cure.20152015-01-0120152015-11-24journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/79595https://dx.doi.org/10.1039/c5py00906ereponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/795952026-05-27T15:37:01Z
dc.title.none.fl_str_mv Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
title Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
spellingShingle Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
Gonzalez, Gustavo
Heat resistant plastics
Hyperbranched poly(ethyleneimine)s
Epoxy thermosets
Networks
Cure
Plàstics termostables
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
title_short Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
title_full Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
title_fullStr Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
title_full_unstemmed Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
title_sort Environmentally-friendly processing of thermosets by two-stage sequential aza-Michael addition and free-radical polymerization of amine-acrylate mixtures
dc.creator.none.fl_str_mv Gonzalez, Gustavo
Fernández Francos, Xavier|||0000-0002-3492-2922
Serra Albet, Maria Àngels|||0000-0003-1387-0358
Sangermano, Marco
Ramis Juan, Xavier|||0000-0003-2550-7185
author Gonzalez, Gustavo
author_facet Gonzalez, Gustavo
Fernández Francos, Xavier|||0000-0002-3492-2922
Serra Albet, Maria Àngels|||0000-0003-1387-0358
Sangermano, Marco
Ramis Juan, Xavier|||0000-0003-2550-7185
author_role author
author2 Fernández Francos, Xavier|||0000-0002-3492-2922
Serra Albet, Maria Àngels|||0000-0003-1387-0358
Sangermano, Marco
Ramis Juan, Xavier|||0000-0003-2550-7185
author2_role author
author
author
author
dc.subject.none.fl_str_mv Heat resistant plastics
Hyperbranched poly(ethyleneimine)s
Epoxy thermosets
Networks
Cure
Plàstics termostables
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
topic Heat resistant plastics
Hyperbranched poly(ethyleneimine)s
Epoxy thermosets
Networks
Cure
Plàstics termostables
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
description A new dual-curing, solvent-free process is described for the preparation of tailor-made materials from off-stoichiometric amine-acrylate formulations. The first stage reaction is a self-limiting click aza-Michael addition between multifunctional amine and acrylate monomers with an excess of acrylate groups. The second stage reaction is a photoinduced radical polymerization of the unreacted acrylate groups. By selecting the structure of the monomers and the stoichiometry of the formulations, mechanical and thermal characteristics of the intermediate and final materials can be tuned. The materials obtained after the first curing stage can be gelled or ungelled and loosely or tightly crosslinked at the end of the second curing stage. The methodology used allows to obtain storable and processable intermediate polymers and final networks with optimum properties for different applications. The presence of amines in the reaction medium overcomes the intrinsic oxygen inhibition of acrylate free-radical polymerizations, resulting in a quasi complete cure.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01
2015
2015-11-24
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/79595
https://dx.doi.org/10.1039/c5py00906e
url https://hdl.handle.net/2117/79595
https://dx.doi.org/10.1039/c5py00906e
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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