| Autor: |
Roig, Adrià, Petrauskaité, Aina, Ramis Juan, Xavier, Flor López, Sílvia de la, Serra Albet, Maria Àngels |
| Přispěvatelé: |
Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics, Universitat Politècnica de Catalunya. POLTEPO - Polímers Termoestables Epoxídics |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Popis: |
The current exponential growth of the human population is associated with a degradation of the environment. In terms of lack of degradability and persistence in the environment, increasing attention is being paid to polymers. Among them, thermosets, that become hardened in the curing, lead to infusible networks with high strength and solvent resistance and superior mechanical and thermal properties. On the downside, their use raises a severe environmental concern because the covalent linkages in the network are irreversible, preventing recycling. An alternative that overcomes this issue is the use of dynamic covalent chemistry, which relies on chemical processes causing reversible formation and breaking of covalent bonding in response to stimuli and allows obtaining easily recyclable thermosets while retaining the overall polymer structure. Incorporating reversible groups like imines in the network structure can allow the reprocessing and recycling of these materials, maintaining their mechanical performance. The associative mechanism of the imine interchange leads to these materials being included in the group of vitrimers. In our work, the inclusion of the imine groups in the network is based on the use of a diglycidyl diimine obtained from vanillin. This renewable product is condensed with 4,4’-oxydianiline to form the bisphenol-diimine, and then it is reacted with epichlorohydrin to obtain the epoxy-imine monomer with the following structure. Peer Reviewed Objectius de Desenvolupament Sostenible::13 - Acció per al Clima |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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