Author, as appears in the article.: Konuray O., Fernández-Francos X., Ramis X., Serra À.
Department: Química Analítica i Química Orgànica
URV's Author/s: Fernández Francos, Xavier / Serra Albet, Maria Angels
Keywords: Thiol Michael addition Methacrylate Dual-curing Click reaction Click chemistry Acrylate
Abstract: Soft poly(thioether) thermosets have been synthesized by employing a two-step curing procedure based on click chemistry. The first stage of curing is a thiol-Michael addition between acrylates (or methacrylates) and thiols in excess, catalyzed by a set of novel tertiary amine catalyst comonomers with allyl functionality. Subsequently, the pendant allyl groups of the comonomer get incorporated into the polymer network by undergoing thiol-ene UV photopolymerization with the remaining thiols. The strong catalysis by the high concentration of tertiary amine groups facilitates quantitative conversions at the end of the first stage. All remaining functional groups are depleted after a short period of UV irradiation. Final materials are clear, transparent, and exhibit homogeneous network structures with alpha relaxation temperatures in the range 3-25 °C. This sub-ambient relaxation temperature range suggests these materials may be suitable for coating applications where delicate substrates are involved such as plastic, wood and paper.
Thematic Areas: Química Polymers and plastics Polymer science Organic chemistry Medicina ii Materials chemistry Materiais Interdisciplinar Farmacia Engenharias iv Engenharias iii Engenharias ii Ciências biológicas ii Ciências biológicas i Ciências agrárias i Biotecnología Astronomia / física
ISSN: 00323861
Author's mail: angels.serra@urv.cat xavier.fernandez@urv.cat
Author identifier: 0000-0003-1387-0358 0000-0002-3492-2922
Last page: 377
Record's date: 2024-09-07
Journal volume: 138
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0032386118300995
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Polymer. 138 369-377
APA: Konuray O., Fernández-Francos X., Ramis X., Serra À. (2018). New allyl-functional catalytic comonomers for sequential thiol- Michael and radical thiol-ene reactions. Polymer, 138(), 369-377. DOI: 10.1016/j.polymer.2018.01.073
Article's DOI: 10.1016/j.polymer.2018.01.073
Entity: Universitat Rovira i Virgili
Journal publication year: 2018
First page: 369
Publication Type: Journal Publications
Repositori URV