Autor segons l'article: Guzmán D., Mateu B., Fernández-Francos X., Ramis X., Serra A.
Departament: Química Analítica i Química Orgànica
Autor/s de la URV: Fernández Francos, Xavier / Serra Albet, Maria Angels
Paraules clau: Thiol–epoxy Thiol-epoxy Thermosets Squalene Eugenol Epoxy resins Cycloaliphatic epoxides Crosslinking Click chemistry Click
Resum: Novel thermosets were prepared by the base-catalysed reaction between a cycloaliphatic resin (ECC) and various thiol crosslinkers. 4-(N,N-Dimethylaminopyridine) (DMAP) was used as base catalyst for the thiol-epox y reaction. A commercial tetrathiol (PETMP) and three different thiols synthesized by us, 6SH-SQ, 3SH-EU and 3SH-ISO, were tested. 6SH-SQ and 3SH-EU were prepared from vinyl or allyl compounds from renewable resources such as squalene and eugenol, respectively. Thiol 3SH-ISO was prepared starting from commercially available triallyl isocyanurate. A kinetic study of the mixtures was performed using differential scanning calorimetr y. Stoichiometric ECC/thiol/DMAP formulations were cured at 120 ∘ Cfor1h,at 150 ∘ C for 1 h and post-cured for 30 min at 200 ∘ C. The materials were characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis and dynamic mechanical thermal analysis. The results revealed that the materials obtained from the synthesized thiols had higher thermal stability and glass transition temperatures than those obtained from the commercial PETMP. In addition, all the materials obtained exhibited very good transparency. This study proves the ability of multifunctional thiols to crosslink cycloaliphatic epoxy resins, leading to more flexible materials than those obtained by cationic homopolymerization of ECC or base- catalysed ECC-anhydride copolymerization.
Àrees temàtiques: Química Polymers and plastics Polymer science Organic chemistry Materials chemistry Materiais Interdisciplinar Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências biológicas i Ciência de alimentos Biotecnología Biodiversidade Astronomia / física
ISSN: 09598103
Adreça de correu electrònic de l'autor: xavier.fernandez@urv.cat angels.serra@urv.cat
Identificador de l'autor: 0000-0002-3492-2922 0000-0003-1387-0358
Pàgina final: 1707
Data d'alta del registre: 2023-02-18
Volum de revista: 66
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://onlinelibrary.wiley.com/doi/abs/10.1002/pi.5336
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Polymer International. 66 (12): 1697-1707
Referència de l'ítem segons les normes APA: Guzmán D., Mateu B., Fernández-Francos X., Ramis X., Serra A. (2017). Novel thermal curing of cycloaliphatic resins by thiol-epoxy click process with several multifunctional thiols. Polymer International, 66(12), 1697-1707. DOI: 10.1002/pi.5336
DOI de l'article: 10.1002/pi.5336
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2017
Pàgina inicial: 1697
Tipus de publicació: Journal Publications
Repositori URV