Autor según el artículo: Belmonte, Alberto Guzman, Dailyn Fernandez-Francos, Xavier De la Flor, Silvia

Departamento: Enginyeria Mecànica

e-ISSN: 2073-4360

Autor/es de la URV: De la Flor Lopez, Silvia / Fernández Francos, Xavier

Palabras clave: Thiol Shape-memory polymer Epoxy Click chemistry

Resumen: This paper presents a new methodology to develop 'thiol-epoxy' shape-memory polymers (SMPs) with enhanced mechanical properties in a simple and efficient manner via 'click' chemistry by using thermal latent initiators. The shape-memory response (SMR), defined by the mechanical capabilities of the SMP (high ultimate strength and strain), the shape-fixation and the recovery of the original shape (shape-recovery), was analyzed on thiol-epoxy systems by varying the network structure and programming temperature. The glass transition temperature (Tg) and crosslinking density were modified using 3- or 4- functional thiol curing agents and different amounts of a rigid triglycidyl isocyanurate compound. The relationship between the thermo-mechanical properties, network structure and the SMR was evidenced by means of qualitative and quantitative analysis. The influence of the programming temperature (Tprog) on the SMR was also analyzed in detail. The results demonstrate the possibility of tailoring SMPs with enhanced mechanical capabilities and excellent SMR, and intend to provide a better insight into the relationship between the network structure properties, programming temperature and the SMR of unconstrained (stress-free) systems; thus, making it easier to decide between different SMP and to define the operative parameters in the useful life.

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

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 20734360

Direcció de correo del autor: xavier.fernandez@urv.cat silvia.delaflor@urv.cat

Identificador del autor: 0000-0002-3492-2922 0000-0002-6851-1371

Página final: 2164

Fecha de alta del registro: 2023-04-01

Volumen de revista: 7

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.mdpi.com/2073-4360/7/10/1505

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Polymers. 7 (10): 2146-2164

Referencia de l'ítem segons les normes APA: Belmonte, Alberto Guzman, Dailyn Fernandez-Francos, Xavier De la Flor, Silvia (2015). Effect of the network structure and programming temperature on the shape-memory response of thiol-epoxy 'click' systems. Polymers, 7(10), 2146-2164. DOI: 10.3390/polym7101505

DOI del artículo: 10.3390/polym7101505

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2015

Página inicial: 2146

Tipo de publicación: Journal Publications