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dc.contributor.author Meizoso Loureiro, Roi
dc.contributor.author Carballeira Amareloa, Tánia
dc.contributor.author Paz Abuin, Senen
dc.contributor.author Soulé, Ezequiel Rodolfo
dc.contributor.author Williams, Roberto Juan Jose
dc.date.available 2015-11-12T17:54:06Z
dc.date.issued 2015-08-08
dc.identifier.citation Meizoso Loureiro, Roi; Carballeira Amareloa, Tánia ; Paz Abuin, Senen; Soulé, Ezequiel Rodolfo; Williams, Roberto Juan Jose; Kinetics of the epoxy-thiol click reaction initiated by a tertiary amine: Calorimetric study using monofunctional components; Elsevier Science; Thermochimica Acta; 616; 8-8-2015; 79-86
dc.identifier.issn 0040-6031
dc.identifier.uri http://hdl.handle.net/11336/2757
dc.description.abstract An analysis of the kinetics of the epoxy–thiol reaction in a model stoichiometric system of monofunctional reagents, 3-mercaptopropionate (BMP) and phenylglycidylether (PGE) is reported. Benzyldimethylamine (BDMA) was employed as initiator in amounts ranging from 0.5 to 2 wt%. These formulations showed a kinetic behavior qualitatively similar to that of commercial adhesives and coatings formulated for a room-temperature cure. Isothermal DSC scans revealed the existence of a relatively long induction period preceding a fast autocatalytic reaction step. Dynamic DSC scans showed that the reaction was shifted to a lower temperature range by increasing the storage period of the initial formulation at 20 °C. This unusual kinetic behavior could be modeled assuming that thiolate anions, slowly generated during the induction period, initiated a fast autocatalytic propagation/proton transfer reaction. The kinetic model included a pseudo-steady state for the initiator concentration and an equilibrium reaction between epoxy and OH groups generated by reaction. A reasonable fitting of isothermal and dynamic DSC runs was achieved in a broad range of temperatures and amine concentrations. In particular, both the length of the induction time and the effect of the storage period were correctly predicted.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier Science
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject CLICK CHEMISTRY
dc.subject DSC
dc.subject EPOXY-THIOL REACTION
dc.subject INDUCTION PERIOD
dc.subject KINETICS
dc.subject TERTIARY AMINE
dc.subject.classification Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification Ciencias Químicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Kinetics of the epoxy-thiol click reaction initiated by a tertiary amine: Calorimetric study using monofunctional components
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-03-30 10:35:44.97925-03
dc.journal.volume 616
dc.journal.pagination 79-86
dc.journal.pais Nld
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Meizoso Loureiro, Roi. Gairesa; España
dc.description.fil Fil: Carballeira Amareloa, Tánia . Gairesa; España
dc.description.fil Fil: Paz Abuin, Senen. Gairesa; España
dc.description.fil Fil: Soulé, Ezequiel Rodolfo. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina
dc.description.fil Fil: Williams, Roberto Juan Jose. Universidad Nacional de Mar del Plata. Facultad de Ingenieria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina
dc.journal.title Thermochimica Acta
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040603115003263
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.tca.2015.08.012


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)