New improved thermosets obtained from DGEBA and a hyperbranched poly(ester-amide)

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/7674

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	Morell, Mireia
dc.contributor.author	Ramis Juan, Xavier
dc.contributor.author	Ferrando Piera, Francesc
dc.contributor.author	Yu, Yingfeng
dc.contributor.author	Serra Albet, Àngels
dc.date	2009-11-03
dc.identifier.citation	Morell, M. [et al.]. New improved thermosets obtained from DGEBA and a hyperbranched poly(ester-amide). "Polymer", 03 Novembre 2009, vol. 50, núm. 23, p. 5374-5383.
dc.identifier.citation	0032-3861
dc.identifier.citation	10.1016/j.polymer.2009.09.024
dc.identifier.uri	http://hdl.handle.net/2117/7674
dc.language.iso	eng
dc.relation	http://www.sciencedirect.com/science/journal/00323861
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	Crosslinking (Polymerization)
dc.subject	Resines epoxídiques
dc.title	New improved thermosets obtained from DGEBA and a hyperbranched poly(ester-amide)
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The influence on the curing process of a commercial hydroxy-functionalized hyperbranched poly(ester-amide) (HBP) Hybrane® S1200 on diglycidylether of bisphenol A (DGEBA) was studied. By Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared Spectroscopy (FTIR) the curing reaction was studied and the covalent incorporation of the modifier in the matrix was proved. By Thermomechanical Analysis (TMA) the reduction of the contraction after gelation on changing the S1200 proportion was observed. The incorporation of S1200 increased the glass transition temperature (Tg) and reduced the overall shrinkage, specially after gelation. The modified materials were more thermally degradable than neat DGEBA thermosets. Thermal expansion coefficient, Young's modulus, impact strength and microhardness were improved without compromising the thermomechanical characteristics. The water uptake behaviour was also evaluated.

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