Repositori institucional URV
| Autor/s de la URV: | De la Flor Lopez, Silvia / Guerrero Ruiz, Federico / Serra Albet, Maria Angels |
| Autor segons l'article: | Guerrero, Federico; Ramis, Xavier; De la Flor, Silvia; Serra, Angels |
| Adreça de correu electrònic de l'autor: | angels.serra@urv.cat federico.guerrero@estudiants.urv.cat federico.guerrero@estudiants.urv.cat silvia.delaflor@urv.cat |
| Identificador de l'autor: | 0000-0003-1387-0358 0000-0001-7163-4068 0000-0001-7163-4068 0000-0002-6851-1371 |
| Any de publicació de la revista: | 2023 |
| Tipus de publicació: | Journal Publications |
| Referència de l'ítem segons les normes APA: | Guerrero, Federico; Ramis, Xavier; De la Flor, Silvia; Serra, Angels (2023). Preparation and Characterization of a Series of Self-Healable Bio-Based Poly(thiourethane) Vitrimer-like Materials. Polymers, 15(6), 1583-. DOI: 10.3390/polym15061583 |
| Referència a l'article segons font original: | Polymers. 15 (6): 1583- |
| Resum: | A series of poly(thiourethanes) (PTUs) from biobased monomers have been synthesized. Limonene and squalene were transformed into polyfunctional thiols by thiol-ene reaction with thioacetic acid and further saponification. They were then reacted in different proportions with hexamethylene diisocyanate (HDI) in the presence of a catalyst to prepare bio-based poly(thiourethane) vitrimer-like materials. The different functionalities of squalene and limonene thiols (six and two, respectively) allow for changing the characteristics of the final material by only varying their relative proportions in the reactive mixture. The proportions of thiol and isocyanate groups were stoichiometric in all the formulations tested. An acidic and a basic catalyst were tested in the preparation of the networked polymers. As the acidic catalyst, we selected dibutyltin dilaurate (DBTDL), and as the basic catalyst, a tetraphenylborate salt of 1,8-diazabicyclo(5.4.0)undec-7-ene (BGDBU), which has the advantage of only releasing the base at high temperatures. The materials obtained were characterized by thermogravimetry and thermomechanical analysis. The vitrimeric-like behavior was evaluated, and we could see that higher proportions of the limonene derivative in the formulations led to faster stress relaxation of the material. The use of the base catalyst led to a much shorter relaxation time. The materials obtained demonstrated good self-healing efficiency. |
| DOI de l'article: | 10.3390/polym15061583 |
| Enllaç font original: | https://www.mdpi.com/2073-4360/15/6/1583 |
| Versió de l'article dipositat: | info:eu-repo/semantics/publishedVersion |
| Accès a la llicència d'ús: | https://creativecommons.org/licenses/by/3.0/es/ |
| Departament: | Enginyeria Mecànica |
| URL Document de llicència: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Àrees temàtiques: | Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física |
| Paraules clau: | Vitrimers Thiol Thermosets Renewable Poly(thiourethanes) Bio-based monomers Acid |
| Entitat: | Universitat Rovira i Virgili |
| Data d'alta del registre: | 2024-11-02 |
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