Recyclable thermosets based on modified epoxy-amine network polymers Lynn Anderson , Prof. Matthew Unthank Northumbria University, UK The poster describes a simple, single stage process for the creation of a recyclable, high performance thermoset material from readily available epoxy resins and aliphatic amines, crosslinked with diboronic esters. This approach to recyclable thermoset (network) polymers is distinguished from others in this field creating an opportunity to form high performance, recyclable materials from established molecular building blocks, common to the plastics, composites, coatings and adhesive industries. The epoxy-amine-dioxazaborocane thermoset materials can be synthesised via a single stage mixing and casting process, though exploitation of a scarcely reported, latent cross-linking reaction. The resultant thermoset can be mechanically recycled over several cycles and, most notably, an efficient and low-cost process for the chemical recycling, disassembly and dissolution of the thermoset material is demonstrated via two complementary synthetic processes, utilising either pinacol (diol) or mono-functional phenylboronic esters. We anticipate that this approach to designing high performance thermoset materials from simple, accessible building blocks, with recyclability built into the molecular architecture, will inspire other researchers working across the field of material science. References 1. M. G. Unthank, C. Cameron, A. Wright, D. Hughes, M. A. Alam and M. R. Probert, Polym. Chem., 2019, 10 , 4920–4929. 3. 2. WO2017/068015A1, 2017. WO2015/165808A1, 2015. Y. Ito, D. Aoki and H. Otsuka, Polym. Chem., 2020, 11 , 5356–5364. 3. Y. Ito, J. Kida, D. Aoki and H. Otsuka, Chem. Commun., 2018, 54 , 12930–12933. 4. X. Zhang, S. Wang, Z. Jiang, Y. Li, and X. Jing, J. Am. Chem. Soc. 2020, 142 , 21852−21860. 5. E. M. Terentejv, M. O. Saed, A. Gablier, Adv. Funct. Mater. 2020, 30 , 1906458. 9. 6. B. Kiskan, S. Gulyuz, Y. Yagci, Polym. Chem., 2022, 13 , 3631-3638
P04
© The Author(s), 2023
Made with FlippingBook Learn more on our blog