Thiol-yne/thiol-epoxy hybrid crosslinked materials based on propargyl modified hyperbranched poly(ethyleneimine) and diglycidylether of bisphenol A resins

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dc.contributor	Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.contributor	Universitat Politècnica de Catalunya. POLTEPO - Polímers Termoestables Epoxídics
dc.contributor.author	Acebo Gorostiza, Cristina
dc.contributor.author	Fernández Francos, Xavier
dc.contributor.author	Ramis Juan, Xavier
dc.contributor.author	Serra Albet, Àngels
dc.date	2016-01-01
dc.identifier.citation	Acebo, C., Fernandez-Francos, X., Ramis, X., Serra, À. Thiol-yne/thiol-epoxy hybrid crosslinked materials based on propargyl modified hyperbranched poly(ethyleneimine) and diglycidylether of bisphenol A resins. "RSC advances", 1 Gener 2016, vol. 6, núm. 66, p. 61576-61584.
dc.identifier.citation	2046-2069
dc.identifier.citation	10.1039/c6ra13158a
dc.identifier.uri	http://hdl.handle.net/2117/90362
dc.language.iso	eng
dc.relation	http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA13158A#!divAbstract
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria química::Química orgànica
dc.subject	Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials::Assaig de fractura
dc.subject	Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject	Composite materials
dc.subject	Chemistry, Organic
dc.subject	Michael addition
dc.subject	Yne chemistry
dc.subject	Networks
dc.subject	Thermosets
dc.subject	Polymers
dc.subject	Photopolymerization
dc.subject	Polymerization
dc.subject	Alkynes
dc.subject	Amine
dc.subject	Materials compostos
dc.subject	Química orgànica
dc.title	Thiol-yne/thiol-epoxy hybrid crosslinked materials based on propargyl modified hyperbranched poly(ethyleneimine) and diglycidylether of bisphenol A resins
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	A novel curing methodology based on the combination of thiol-yne and thiol-epoxy click reactions has been developed. The curing process consists of a first photoinitiated thiol-yne reaction, followed by a thermal thiol-epoxy process. As alkyne substrate a new propargyl terminated hyperbranched poly(ethyleneimine) (PEIyne) has been synthesized from the reaction of commercial poly(ethylenimine) (PEI) and glycidyl propargyl ether. The evolution of the curing of different mixtures of PEIyne and diglycidylether of bisphenol A (DGEBA) with the stoichiometric amount of tetrathiol (PETMP) has been monitored by DSC. The new hybrid materials have been characterized by thermomechanical analysis, thermogravimetry and by electronic microscopy inspection and compared with neat thiol-yne and thiol-epoxy materials. The T(g)s of the complete cured materials increase with the proportion of epoxide in the formulation. The thiol-yne network improves the plasticity of the fracture of the materials.

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