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TITLE:
Preparation and Characterization of a Series of Self-Healable Bio-Based Poly(thiourethane) Vitrimer-like Materials - imarina:9295557

URV's Author/s:De la Flor Lopez, Silvia / Guerrero Ruiz, Federico / Serra Albet, Maria Angels
Author, as appears in the article.:Guerrero, Federico; Ramis, Xavier; De la Flor, Silvia; Serra, Angels
Author's mail:angels.serra@urv.cat
federico.guerrero@estudiants.urv.cat
federico.guerrero@estudiants.urv.cat
silvia.delaflor@urv.cat
Author identifier:0000-0003-1387-0358
0000-0001-7163-4068
0000-0001-7163-4068
0000-0002-6851-1371
Journal publication year:2023
Publication Type:Journal Publications
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
Papper original source:Polymers. 15 (6): 1583-
Abstract: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.
Article's DOI:10.3390/polym15061583
Link to the original source:https://www.mdpi.com/2073-4360/15/6/1583
Papper version:info:eu-repo/semantics/publishedVersion
licence for use:https://creativecommons.org/licenses/by/3.0/es/
Department:Enginyeria Mecànica
Licence document URL:https://repositori.urv.cat/ca/proteccio-de-dades/
Thematic Areas:Polymers and plastics
Polymer science
Odontología
General chemistry
Farmacia
Engenharias ii
Ciências biológicas ii
Chemistry (miscellaneous)
Chemistry (all)
Biotecnología
Astronomia / física
Keywords:Vitrimers
Thiol
Thermosets
Renewable
Poly(thiourethanes)
Bio-based monomers
Acid
Entity:Universitat Rovira i Virgili
Record's date:2024-11-02
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