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Isothermal and non-isothermal cure of a tri-functional epoxy resin (TGAP): a stochastic TMDSC study
dc.contributor.author | Hutchinson, John M. |
dc.contributor.author | Shiravand, Fatemeh |
dc.contributor.author | Calventus Solé, Yolanda |
dc.contributor.author | Fraga Rivas, Iria |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics |
dc.date.accessioned | 2012-02-01T19:05:14Z |
dc.date.available | 2012-02-01T19:05:14Z |
dc.date.created | 2012-02-10 |
dc.date.issued | 2012-02-10 |
dc.identifier.citation | Hutchinson, J.M. [et al.]. Isothermal and non-isothermal cure of a tri-functional epoxy resin (TGAP): a stochastic TMDSC study. "Thermochimica acta", 10 Febrer 2012, núm. 529, p. 14-21. |
dc.identifier.issn | 0040-6031 |
dc.identifier.uri | http://hdl.handle.net/2117/14921 |
dc.description.abstract | The isothermal cure of a highly reactive tri-functional epoxy resin, tri-glycidyl para-amino phenol (TGAP), with diamino diphenyl sulphone (DDS), at two different cure temperatures Tc has been studied by both conventional differential scanning calorimetry (DSC) and by a stochastic temperature modulated DSC technique, TOPEM. From a series of isothermal cure experiments for increasing cure times, the glass transition temperature Tg as a function of isothermal cure time is determined by conventional DSC from a second (non-isothermal) scan, and the vitrification time tv is obtained as the time at which Tg = Tc. In parallel, TOPEM experiments at the same Tc lead directly to the determination of tv from the sigmoidal change in the quasi-static heat capacity. It is not possible to identify the glass transition temperature of the fully cured system, Tg∞, in a third scan by conventional DSC. In contrast, with TOPEM a second (non-isothermal) scan at 2 K/min after the isothermal cure gives rise to three separate transitions: devitrification of the partially cured and vitrified material; almost immediate vitrification as the Tg of the system again rises; finally another devitrification, at a temperature approximating closely to Tg∞. Thus with TOPEM it is possible to obtain a calorimetric measure of the glass transition temperature of this fully cured system. |
dc.format.extent | 8 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Materials naturals::Resines |
dc.subject.lcsh | Calorimetry |
dc.subject.lcsh | Epoxy resins GEC |
dc.title | Isothermal and non-isothermal cure of a tri-functional epoxy resin (TGAP): a stochastic TMDSC study |
dc.type | Article |
dc.subject.lemac | Calorimetria |
dc.subject.lemac | Resines epoxídiques |
dc.contributor.group | Universitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química |
dc.identifier.doi | 10.1016/j.tca.2011.11.008 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 9382857 |
dc.description.version | Postprint (published version) |
local.citation.author | Hutchinson, J.M.; Shiravand, F.; Calventus, Y.; Fraga, I. |
local.citation.publicationName | Thermochimica acta |
local.citation.number | 529 |
local.citation.startingPage | 14 |
local.citation.endingPage | 21 |
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