Reprocessability in Engineering Thermosets Achieved Through Frontal Ring-Opening Metathesis Polymerization.

Autor: Cooper JC; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA., Paul JE; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA., Ramlawi N; Department of Mechanical Science and Engineering, University of Illinois Urban-Champaign, Urbana, IL, 61801, USA., Saengow C; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Mechanical Science and Engineering, University of Illinois Urban-Champaign, Urbana, IL, 61801, USA., Sharma A; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA., Suslick BA; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA., Ewoldt RH; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Mechanical Science and Engineering, University of Illinois Urban-Champaign, Urbana, IL, 61801, USA., Sottos NR; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA., Moore JS; Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.; Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Jul; Vol. 36 (28), pp. e2402627. Date of Electronic Publication: 2024 May 03.
DOI: 10.1002/adma.202402627
Abstrakt: While valued for their durability and exceptional performance, crosslinked thermosets are challenging to recycle and reuse. Here, inherent reprocessability in industrially relevant polyolefin thermosets is unveiled. Unlike prior methods, this approach eliminates the need to introduce exchangeable functionality to regenerate the material, relying instead on preserving the activity of the metathesis catalyst employed in the curing reaction. Frontal ring-opening metathesis polymerization (FROMP) proves critical to preserving this activity. Conditions controlling catalytic viability are explored to successfully reclaim performance across multiple generations of material, thus demonstrating long-term reprocessability. This straightforward and scalable remolding strategy is poised for widespread adoption. Given the anticipated growth in polyolefin thermosets, these findings represent an important conceptual advance in the pursuit of a fully circular lifecycle for thermoset polymers.
(© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
Externí odkaz: