Crosslinking of mixtures of DGEBA with 1,6-dioxaspiro[4,4]nonan-2,7-dione initiated by tertiary amines. Part IV. Effect of hydroxyl groups on initiation and curing kinetics

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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	Fernández Francos, Xavier
dc.contributor.author	Cook, Wayne D.
dc.contributor.author	Serra Albet, Àngels
dc.contributor.author	Ramis Juan, Xavier
dc.contributor.author	Liang, Genhai G.
dc.contributor.author	Salla Tarragó, José María
dc.date	2010-01-06
dc.identifier.citation	Fernandez-Francos, X. [et al.]. Crosslinking of mixtures of DGEBA with 1,6-dioxaspiro[4,4]nonan-2,7-dione initiated by tertiary amines. Part IV. Effect of hydroxyl groups on initiation and curing kinetics. "Polymer", 06 Gener 2010, vol. 51, núm. 1, p. 26-34.
dc.identifier.citation	0032-3861
dc.identifier.citation	10.1016/j.polymer.2009.11.013
dc.identifier.uri	http://hdl.handle.net/2117/8316
dc.language.iso	eng
dc.publisher	Elsevier
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subject	Àrees temàtiques de la UPC::Enginyeria química::Química analítica
dc.subject	Addition polymerization
dc.subject	Epoxy compounds
dc.subject	Polimerització
dc.subject	Plàstics -- Anàlisi química
dc.subject	Anions
dc.title	Crosslinking of mixtures of DGEBA with 1,6-dioxaspiro[4,4]nonan-2,7-dione initiated by tertiary amines. Part IV. Effect of hydroxyl groups on initiation and curing kinetics
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The anionic homopolymerization of DGEBA epoxy resin and its anionic copolymerization with a bislactone was studied using two alternative tertiary amines, 1-methylimidazole (1MI) and dimethylaminopyridine (DMAP) as initiators. 1MI caused slower cure than DMAP in neat DGEBA and DGEBA-bislactone formulations. Studies of the influence of the hydroxyl concentration in the DGEBA oligomer on its homopolymerization explain descrepancies in the literature regarding the ability of these initiators to produce full cure of the epoxy groups. In contrast, in the copolymerization of DGEBA-bislactone formulations, full cure could be readily achieved with either 1MI or DMAP as initiators, irrespective of the hydroxyl content. FTIR and DSC experiments show that this behaviour is associated with the formation of the carboxylate anion which plays an important part on the curing kinetics and the completion of cure.
dc.description.abstract	Peer Reviewed

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