Vanillin-Based Epoxy Vitrimers: Looking at the Cystamine Hardener from a Different Perspective - Archive ouverte HAL Access content directly
Journal Articles ACS Sustainable Chemistry & Engineering Year : 2023

Vanillin-Based Epoxy Vitrimers: Looking at the Cystamine Hardener from a Different Perspective

Abstract

Epoxy vitrimers encompass many advantages compared to traditional epoxy materials such as recyclability, repairability, and reprocessability. These properties are induced by the incorporation of dynamic reversible covalent bonds. Recently, the incorporation of aromatic disulfide bridges that are dynamic has expanded the development of new eco-friendly epoxy materials. Herein, we studied a bio-based aliphatic disulfide based on cystamine as a hardener with a vanillin-derived bio-sourced epoxy to prepare fully bio-based epoxy vitrimers. This article provides a comparative study between cystamine and an aromatic disulfide benchmark hardener issued from petrol resources. This work demonstrated that the presence of this aliphatic hardener has a significant influence not only on the reactivity, but most importantly on the resulting dynamic properties. An interesting yet counterintuitive accelerating effect of the dynamic exchanges was clearly demonstrated with only 2 to 20% of molar fraction of cystamine added to the aromatic disulfide formulation. A similar glass transition was obtained compared to the purely aromatic analogue, but relaxation times were decreased by an order of magnitude.

Domains

Polymers
Fichier principal
Vignette du fichier
ACS Sust Eng Template revised.pdf (1.28 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Licence : CC BY NC ND - Attribution - NonCommercial - NoDerivatives

Dates and versions

hal-04092640 , version 1 (25-05-2023)

Identifiers

Cite

Solène Guggari, Fiona Magliozzi, Samuel Malburet, Alain Graillot, Mathias Destarac, et al.. Vanillin-Based Epoxy Vitrimers: Looking at the Cystamine Hardener from a Different Perspective. ACS Sustainable Chemistry & Engineering, 2023, 11 (15), pp.6021-6031. ⟨10.1021/acssuschemeng.3c00379⟩. ⟨hal-04092640⟩
54 View
43 Download

Altmetric

Share

Gmail Facebook X LinkedIn More