| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Mangialetto, Jessica
Vrije Universiteit Brussel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Construction of furan-maleimide Diels-Alder reversible network cure diagrams: modelling and experimental validation
- 2024Effects of Cure on the Ionic Conductivity and Relaxation Strength of a Reversible Polymer Network Studied by Dielectric Spectroscopy.citations
- 2024Modelling of diffusion-controlled Diels-Alder reversible network formation and its application to cure diagrams
- 2023Diffusion- and mobility-controlled self-healing polymer networks with dynamic covalent bonding
- 2023Separating Kinetics from Relaxation Dynamics in Reactive Soft Matter by Dielectric Spectroscopycitations
- 2023Real-Time Determination of the Glass Transition Temperature during Reversible Network Formation Based on Furan–Maleimide Diels–Alder Cycloadditions Using Dielectric Spectroscopycitations
- 2022UV Stability of Self-Healing Poly(methacrylate) Network Layerscitations
- 2020Self-Healing in Mobility-Restricted Conditions Maintaining Mechanical Robustness: Furan–Maleimide Diels–Alder Cycloadditions in Polymer Networks for Ambient Applicationscitations
- 2019Diffusion- and Mobility-Controlled Self-Healing Polymer Networks with Dynamic Covalent Bondingcitations
- 2018The Effect of Vitrification on the Diels-Alder Reaction Kinetics
Places of action
| Organizations | Location | People |
|---|
document
Modelling of diffusion-controlled Diels-Alder reversible network formation and its application to cure diagrams
Abstract
In recent years, significant attention has been devoted to the study of thermoreversible networks based on Diels-Alder (DA) bonding for their potential as self-healing materials. Two competing equilibria result from the DA reaction, involving endo- and exo- cycloadducts, with covalent bond formation favored at low temperatures and their opening preferred at higher temperatures. Apart from granting self-healing abilities, these dynamic bonds enhance material lifetime, stability, reliability and sustainability, but also improve recyclability, reprocessability, and reshapeability compared to traditional network-forming materials. These enhanced properties make these materials suitable for many applications, especially those requiring robust thermomechanical properties. Such applications imply the necessity of a (partially) vitrified network with a sufficiently high glass transition temperature (Tg ). This will inevitably affect their self-healing, as both forward and retro-DA reaction rates may be impacted by the limited mobility.<br/>In this work, the impact of vitrification on DA reaction kinetics is investigated for a reversible thermosetting network based on a furan-maleimide chemistry. First, the feasibility of self-healing in diffusion-controlled conditions is proven. Secondly, a novel mechanistic model describing the system in both kinetically and diffusion-controlled conditions is proposed. Optimization of the kinetic, thermodynamic, and diffusion parameters was done using calorimetric data and Tg evolutions. These parameters allowed the construction of Time-Temperature-Transformation and Continuous-Heating-Transformation. Their unique shapes, largely different from classical irreversible thermosets, were experimentally confirmed by thermo(mechanical) analysis. This insight is particularly relevant for the design and processing of these materials, emphasizing their potential in self-healing applications.<br/>