New anhydride/epoxy thermosets based on diglycidyl ether of bisphenol A and 10-undecenoyl modified poly(ethyleneimine) with improved impact resistance

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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	Flor López, Sílvia de la
dc.contributor.author	Ramis Juan, Xavier
dc.contributor.author	Serra Albet, Àngels
dc.date	2015-08-01
dc.identifier.citation	Acebo, C., Fernández, X., de la Flor, S., Ramis, X., Serra, À. New anhydride/epoxy thermosets based on diglycidyl ether of bisphenol A and 10-undecenoyl modified poly(ethyleneimine) with improved impact resistance. "Progress in organic coatings", 01 Agost 2015, vol. 85, núm. August, p. 52-59.
dc.identifier.citation	0300-9440
dc.identifier.citation	10.1016/j.porgcoat.2015.02.023
dc.identifier.uri	http://hdl.handle.net/2117/77509
dc.language.iso	eng
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	Polymers
dc.subject	Thermosetting resins
dc.subject	Hyperbranched
dc.subject	Toughness
dc.subject	Anhydride
dc.subject	Rheology
dc.subject	Functionalized hyperbranched polymer
dc.subject	Epoxy-resin
dc.subject	Epoxy/anhydride thermosets
dc.subject	Curing process
dc.subject	Morphology
dc.subject	Kinetics
dc.subject	Spectroscopy
dc.subject	Polyesters
dc.subject	Toughness
dc.subject	Strength
dc.subject	Resines epoxídiques
dc.subject	Polímers
dc.title	New anhydride/epoxy thermosets based on diglycidyl ether of bisphenol A and 10-undecenoyl modified poly(ethyleneimine) with improved impact resistance
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	New dendritic modifiers have been synthesized by amidation of hyperbranched poly(ethylenimine)(PEIs) with 10-undecenoic acid to obtain hyperbranched polymers (HBPs) with different degree of modification. These HBPs have been used as toughness modifiers in a proportion of 10 and 20% in reference to the epoxy resin in diglycidyl ether of bisphenol A (DGEBA)/methyltetrahydrophthalic anhydride (MTHPA) formulations. The curing process has been studied by dynamic scanning calorimetry and by rheometry, which allow the kinetic constants and the gel and vitrification times to be evaluated. The materials obtained have been thermally characterized and their mechanical properties have been evaluated. An increase in impact resistance has been achieved and the T-g of all thermosets prepared was higher than 100 degrees C in spite of the flexible structure of the PEI modifiers. (C) 2015 Elsevier B.V. All rights reserved.

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