Author, as appears in the article.: Guzmán D; Santiago D; Serra à; Ferrando F

Department: Enginyeria Mecànica

URV's Author/s: Ferrando Piera, Francesc / Serra Albet, Maria Angels

Keywords: Thiol-epoxy Sustainability Resins Phloroglucinol Oil Latent catalyst Epoxy thermoset Acid sustainability phloroglucinol latent catalyst epoxy thermoset

Abstract: © 2020 by the authors. All rights reserved. The pure trifunctional glycidyl monomer from phloroglucinol (3EPO-Ph) was synthesized and used as feedstock in the preparation of novel bio-based thermosets by thiol-epoxy curing. The monomer was crosslinked with different commercially available thiols: tetrafunctional thiol (PETMP), trifunctional thiol (TTMP) and an aromatic dithiol (TBBT) as curing agents in the presence of a base. As catalyst, two different commercial catalysts: LC-80 and 4-(N,N-dimethylamino) pyridine (DMAP) and a synthetic catalyst, imidazolium tetraphenylborate (base generator, BG) were employed. The curing of the reactive mixtures was studied by using DSC and the obtained materials by means of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and dynamic mechanical thermal analysis (DMTA). The results revealed that only the formulations catalyzed by BG showed a latent character. Already prepared thermosetting materials showed excellent thermal, thermomechanical and mechanical properties, with a high transparency. In addition to that, when compared with the diglycidyl ether of bisphenol A (DGEBA)/PETMP material, the thermosets prepared from the triglycidyl derivative of phloroglucinol have better final characteristics and therefore this derivative can be considered as a partial or total renewable substitute of DGEBA in technological applications.

Thematic Areas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 20734360

Author's mail: f.ferrando@urv.cat angels.serra@urv.cat

Author identifier: 0000-0003-4450-2734 0000-0003-1387-0358

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2073-4360/12/2/337

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Polymers. 12 (2):

APA: Guzmán D; Santiago D; Serra à; Ferrando F (2020). Novel bio-based epoxy thermosets based on triglycidyl phloroglucinol prepared by thiol-epoxy reaction. Polymers, 12(2), -. DOI: 10.3390/polym12020337

Article's DOI: 10.3390/polym12020337

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

Publication Type: Journal Publications