Autor según el artículo: Àngels Serra; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
Departamento: Química Analítica i Química Orgànica
Autor/es de la URV: SERRA ALBET, MARIA ANGELS; Ali Osman Konuray; Xavier Fernández-Francos; Xavier Ramis
Palabras clave: aza-Michael reaction Photopolymerization
Resumen: 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.
Grupo de investigación: Polimers
Áreas temáticas: Química Química Chemistry
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0014-3057
Identificador del autor: 0000-0003-1387-0358; n/a; 0000-0002-3492-2922; 0000-0003-2550-7185
Fecha de alta del registro: 2016-10-10
Página final: 267
Volumen de revista: 84
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2016
Página inicial: 256
Tipo de publicación: Article Artículo Article
Repositori URV