Next Article in Journal / Special Issue
Biodegradable Shape Memory Polymeric Material from Epoxidized Soybean Oil and Polycaprolactone
Previous Article in Journal
Maleimide-Functionalized PEI600 Grafted Polyurethane: Synthesis, Nano-Complex Formation with DNA and Thiol-Conjugation of the Complexes for Dual DNA Transfection
Previous Article in Special Issue
Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature
Article Menu

Export Article

Open AccessArticle
Polymers 2015, 7(10), 2146-2164;

Effect of the Network Structure and Programming Temperature on the Shape-Memory Response of Thiol-Epoxy “Click” Systems

Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain
Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, C/Marcel lí Domingo s/n, 43007 Tarragona, Spain
Thermodynamics Laboratory, ETSEIB, Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain
Author to whom correspondence should be addressed.
Academic Editor: Wei Min Huang
Received: 28 July 2015 / Revised: 29 September 2015 / Accepted: 21 October 2015 / Published: 26 October 2015
(This article belongs to the Special Issue Shape-Memory Polymers)
Full-Text   |   PDF [4963 KB, uploaded 26 October 2015]   |  


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. View Full-Text
Keywords: epoxy; thiol; shape-memory polymer; click chemistry epoxy; thiol; shape-memory polymer; click chemistry

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Belmonte, A.; Guzmán, D.; Fernández-Francos, X.; De la Flor, S. Effect of the Network Structure and Programming Temperature on the Shape-Memory Response of Thiol-Epoxy “Click” Systems. Polymers 2015, 7, 2146-2164.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top