Autor segons l'article: Àngels Serra; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
Departament: Química Analítica i Química Orgànica
Autor/s de la URV: SERRA ALBET, MARIA ANGELS; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
Paraules clau: aza-Michael reaction Photopolymerization
Resum: Dual curing systems find various uses in industry with the process flexibility they provide which allows tailoring properties at different curing stages in accordance with application requirements. A safe and efficient dual curing scheme is proposed here for a set of mixtures containing different proportions of acrylates and methacrylates. The first curing stage is a stoichiometric aza-Michael addition between acrylates and an amine, followed by photo-initiated radical homopolymerization of methacrylates and remaining acrylates. An analysis of aza-Michael reaction kinetics confirmed that amines react selectively with acrylates, leaving methacrylates unreacted after the first curing stage. It was found that acrylate-rich mixtures achieve complete global conversion at the end of the scheme. However, the highest crosslinking density and thermal resistance was observed in a methacrylate-rich formulation. The resulting materials show a wide range of viscoelastic properties at both curing stages that can be tailored to a variety of industrial application needs.
Grup de recerca: Polimers
Àrees temàtiques: Química Química Chemistry
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0014-3057
Identificador de l'autor: 0000-0003-1387-0358; n/a; 0000-0002-3492-2922; 0000-0003-2550-7185
Data d'alta del registre: 2016-10-10
Pàgina final: 267
Volum de revista: 84
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0014305716306863?via%3Dihub
DOI de l'article: 10.1016/j.eurpolymj.2016.09.025
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2016
Pàgina inicial: 256
Tipus de publicació: Article Artículo Article
Repositori URV