| Title | Long-chain polyamide covalent adaptable networks based on renewable ethylene brassylate and disulfide exchange |
|---|---|
| ID_Doc | 8144 |
| Authors | Pronoitis, C; Hakkarainen, M; Odelius, K |
| Title | Long-chain polyamide covalent adaptable networks based on renewable ethylene brassylate and disulfide exchange |
| Year | 2021 |
| Published | Polymer Chemistry, 12.0, 39 |
| Abstract | Conventional thermosets cannot be recycled once they reach their end-of-life creating unavoidable waste. Covalent adaptable networks (CANs) are a promising circular solution as they can be reprocessed by conventional techniques employed for processing thermoplastics. In this work, strong and chemically resistant, long-chain polyamide (PA) CANs were developed by introducing intrinsically reactive disulfides in PA networks. Following a solvent-free strategy and utilizing ethylene brassylate, a renewable cyclic diester, our approach brings together the high strength and chemical resistance of long-chain, crosslinked PAs with the reprocessability of dynamic networks in a sustainable fashion. The structure of the PA CANs was elucidated by X-ray diffraction analysis, and the effect of the disulfides on the thermal, mechanical, viscoelastic and dynamic properties was evaluated. The PA CANs had high gel content (86-98%) and they were reprocessable over three grinding-compression molding cycles, retaining their strength (15-20 MPa), crosslink density and gel content. They exhibited rapid stress relaxation with relaxation times as low as 1.06 s and were healable within 5 min. The long-chain PA CANs are easy to prepare and feature several elements of sustainable materials design, highly valued in plastics' circular economy. |
| https://pubs.rsc.org/en/content/articlepdf/2021/py/d1py00811k |
Similar Articles
| ID | Score | Article |
|---|---|---|
2972
|
Griffini, G; Rigatelli, B; Turri, S Diels-Alder Macromolecular Networks in Recyclable, Repairable and Reprocessable Polymer Composites for the Circular Economy - A Review(2023)Macromolecular Materials And Engineering, 308, 11 | |
| 19996
|
Shi, CX; Quinn, EC; Diment, WT; Chen, EYX Recyclable and (Bio)degradable Polyesters in a Circular Plastics Economy(2024)Chemical Reviews, 124.0, 7 | |
| 25404
|
Post, W; Susa, A; Blaauw, R; Molenveld, K; Knoop, RJI A Review on the Potential and Limitations of Recyclable Thermosets for Structural Applications(2020)Polymer Reviews, 60, 2 | |
| 27574
|
Rahimzadeh, R; Han, YZ; Manas-Zloczower, I A mechanochemical approach to recycle thermosets containing carbonate and thiourethane linkages(2024) | |
| 24241
|
Hassanian-Moghaddam, D; Asghari, N; Ahmadi, M Circular Polyolefins: Advances toward a Sustainable Future(2023)Macromolecules, 56, 15 |