Influence of end groups in hyperbranched polyesters used as modifiers in the characteristics of epoxy thermosets cured by adipic dihydrazide

Inicio | ¿Qué es? | Contacto

English | Català

Consultar RECERCAT

Por comunidades y
colecciones Por fecha Por autores Por títulos Por temas (CDU)

Consultar departamento

Por fecha Por autores Por títulos Por temas (CDU)

Estadisticas

Del documento Todo RECERCAT

Mi RECERCAT

Entrar Alertas por correo-e

Directorio de otros repositorios

RECERCAT Principal > Universitat Politècnica de Catalunya > Documents de recerca > Visualizar documento

Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2117/19943

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	Tomuta, Adrian Marius
dc.contributor.author	Ramis Juan, Xavier
dc.contributor.author	Flor López, Sílvia de la
dc.contributor.author	Serra Albet, Àngels
dc.date	2013-07
dc.identifier.citation	Tomuta, A. [et al.]. Influence of end groups in hyperbranched polyesters used as modifiers in the characteristics of epoxy thermosets cured by adipic dihydrazide. "Express polymer letters", Juliol 2013, vol. 7, núm. 7, p. 595-606.
dc.identifier.citation	1788-618X
dc.identifier.citation	10.3144/expresspolymlett.2013.57
dc.identifier.uri	http://hdl.handle.net/2117/19943
dc.language.iso	spa
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	Àrees temàtiques de la UPC::Enginyeria química::Química orgànica
dc.subject	Gums and resins
dc.subject	Polymers
dc.subject	Dihydrazides
dc.subject	Hyperbranched polymers
dc.subject	Latency
dc.subject	Thermosetting resins
dc.subject	Toughness
dc.subject	Polímers
dc.subject	Resines epoxídiques
dc.title	Influence of end groups in hyperbranched polyesters used as modifiers in the characteristics of epoxy thermosets cured by adipic dihydrazide
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Mixtures of diglycidylether of bisphenol A (DGEBA) resin and different ratios of aliphatic-aromatic hyperbranched polyester (HBP) were cured by a latent curing agent, adipic dihydrazide (AH). The HBPs prepared have hydroxyl groups or 10-undecenoyl or allyl groups as chain ends. The curing mixtures were investigated by differential scanning calorimetry (DSC) to study the curing process and to evaluate the kinetic parameters of the different formulations. These studies suggest that HBPs decrease the curing rate of epoxy/AH in the case of vinyl terminated HPB, whereas OH terminated HBP accelerates the first stages and delays the lasts. The thermosets obtained showed an improvement in microhardness and impact strength without any reduction of the Tg and thermal parameters. Microparticle phase separation was observed with the undecenoyl HBP derivatives or when a 10% of allyl HBP derivative was in the formulation.

Mostrar el registro sencillo del ítem

Documentos relacionados

Otros documentos del mismo autor/a

New aromatic-aliphatic hyperbranched polyesters with vinylic end groups of different length as modifiers of epoxy/anhydride thermosets

Tomuta, Adrian Marius; Ferrando Piera, Francesc; Serra Albet, Àngels; Ramis Juan, Xavier

New chemically reworkable epoxy coatings obtained by the addition of polyesters with star topologies to diglycidyl ether of bisphenol A resins

Tomuta, Adrian Marius; Ramis Juan, Xavier; Fernández Francos, Xavier; Ferrando Piera, Francesc; Serra Albet, Àngels

A new two-stage curing system: Thiol-ene/epoxy homopolymerization using an allyl terminated hyperbranched polyester as reactive modifier

Flores Guillen, Marjorie; Tomuta, Adrian Marius; Fernández Francos, Xavier; Sangermano, Marco; Serra Albet, Àngels; Ramis Juan, Xavier

Effect of hydroxyl ended and end-capped multiarm star polymers on the curing process and mechanical characteristics of epoxy/anhydride thermosets

Acebo Gorostiza, Cristina; Picardi, Annamaria; Fernández Francos, Xavier; Flor López, Sílvia de la; Ramis Juan, Xavier; Serra Albet, Àngels

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

Acebo Gorostiza, Cristina; Fernández Francos, Xavier; Flor López, Sílvia de la; Ramis Juan, Xavier; Serra Albet, Àngels

Accesibilidad | Aviso legal | Política de Cookies | Documentos de uso interno

Coordinación

Patrocinio