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dc.contributor.authorGamardella, Francesco
dc.contributor.authorFlor López, Sílvia de la
dc.contributor.authorRamis Juan, Xavier
dc.contributor.authorSerra Albet, Maria Àngels
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.date.accessioned2020-09-18T11:43:03Z
dc.date.available2022-06-01T00:31:55Z
dc.date.issued2020-06-01
dc.identifier.citationGamardella, F. [et al.]. Recyclable poly(thiourethane) vitrimers with high Tg. Influence of the isocyanate structure. "Reactive and functional polymers", 1 Juny 2020, vol. 151, p. 104574:1-104574:10.
dc.identifier.issn1381-5148
dc.identifier.urihttp://hdl.handle.net/2117/328931
dc.description.abstractNetworked poly(thiourethane) materials with Tgs around 130 °C, derived from two aliphatic isocyanates (isophorone diisocyanate, IPDI and 4,4'-methylene bis(cyclohexyl isocyanate), HMDI) and one aromatic diisocyanate (toluene-2,4-diisocyanate, TDI) have been prepared with the same trithiol as comonomer (trimethylol propane tris(3-mercaptopropionate), S3) in stoichiometric proportions in the presence of dibutyltin dilaurate (DBTDL) as the catalyst. The higher reactivity of TDI allowed the preparation of this material in absence of catalyst. The evolution of the curing process has been followed by FTIR. Thermomechanical studies have been performed to determine their viscoelastic properties and their vitrimeric behaviour. The materials were able to reach a complete relaxation stress state thanks to the exchange process of the thiourethane moiety. Among them, TDI derived material experimented the fastest relaxation. The materials were also characterized by thermogravimetry and tensile tests. The recycled materials obtained by grinding the original thermosets and hot-pressing the powder have been fully characterized by mechanical, thermomechanical and FTIR studies, which allowed to confirm their recyclability without appreciable changes in the network structure. The presence of DBTDL in the materials has been proved to be necessary to reach a good recyclability.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshHeat resistant plastics
dc.subject.otherVitrimers
dc.subject.otherPoly(thiourethane)
dc.subject.otherThermosets
dc.subject.otherRecyclability
dc.subject.otherCovalent adapatable networks
dc.titleRecyclable poly(thiourethane) vitrimers with high Tg. Influence of the isocyanate structure
dc.typeArticle
dc.subject.lemacPlàstics termostables
dc.contributor.groupUniversitat Politècnica de Catalunya. POLTEPO - Polímers Termoestables Epoxídics
dc.identifier.doi10.1016/j.reactfunctpolym.2020.104574
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S1381514820301966
dc.rights.accessOpen Access
local.identifier.drac28781114
dc.description.versionPostprint (author's final draft)
local.citation.authorGamardella, F.; de la Flor, S.; Ramis, X.; Serra, M. À.
local.citation.publicationNameReactive and functional polymers
local.citation.volume151
local.citation.startingPage104574:1
local.citation.endingPage104574:10


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