Multiarm star with poly(ethyleneimine) core and poly(epsilon-caprolactone) arms as modifiers of diglycidylether of bisphenol A thermosets cured by 1-methylimidazole

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/19483

dc.contributor	Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.contributor	Universitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
dc.contributor.author	Acebo, Cristina
dc.contributor.author	Fernández Francos, Xavier
dc.contributor.author	Ferrando Piera, Francesc
dc.contributor.author	Serra Albet, Àngels
dc.contributor.author	Salla Tarragó, José María
dc.contributor.author	Ramis Juan, Xavier
dc.date	2013-03
dc.identifier.citation	Acebo, C. [et al.]. Multiarm star with poly(ethyleneimine) core and poly(epsilon-caprolactone) arms as modifiers of diglycidylether of bisphenol A thermosets cured by 1-methylimidazole. "Reactive and functional polymers", Març 2013, vol. 73, núm. 3, p. 431-441.
dc.identifier.citation	1381-5148
dc.identifier.citation	10.1016/j.reactfunctpolym.2012.11.007
dc.identifier.uri	http://hdl.handle.net/2117/19483
dc.language.iso	eng
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
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 dels materials::Materials plàstics i polímers
dc.subject	Epoxy resins
dc.subject	Addition polymerization
dc.subject	Star polymers
dc.subject	Hyperbranched
dc.subject	Epoxy resin
dc.subject	Anionic polymerization
dc.subject	Thermosets
dc.subject	Resines epoxídiques
dc.subject	Polímers
dc.title	Multiarm star with poly(ethyleneimine) core and poly(epsilon-caprolactone) arms as modifiers of diglycidylether of bisphenol A thermosets cured by 1-methylimidazole
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Well-defined multiarm star copolymers, with hyperbranched poly(ethyleneimine) (PEI) as the core and poly(e-caprolactone) (PCL) arms with different degree of polymerization were synthesized by cationic ring-opening polymerization of e-caprolactone from a hyperbranched poly(ethyleneimine) core and used to modify diglycidylether of bisphenol A formulations cured with 1-methylimidazole as anionic initiator. The curing process was studied by dynamic scanning calorimetry (DSC) and FTIR. By rheometry the complex viscosity of the multiarm stars synthesized and the influence of their addition to the reactive mixture was analyzed in detail. The resulting materials were characterized by thermal and mechanical tests. The addition of the multiarm star to the formulation led to homogeneous materials with a slightly toughened fracture in comparison to neat DGEBA thermosets without compromising thermal characteristics.

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