Imidazolium-catalyzed dynamic ester cross-links towards reprocessable epoxy vitrimers

VOC-free tricomponent reaction platform for epoxy network formation mediated by a recyclable ionic liquid

“…6c). 56 Upon heating, the transition from glassy to a rubbery state is clearly visible from the steep G ′ drop when the temperature reaches ca. 45 °C.…”

“…61 Moreover, this reaction platform produces epoxy materials bearing β-hydroxyl esters, which might be adapted as dynamic ester crosslinks for the design of reprocessable epoxy vitrimers. 56 This approach will be further elaborated in our next paper.…”

Catalyst-free dynamic transesterification towards a high-performance and fire-safe epoxy vitrimer and its carbon fiber composite

“…5 Among these dynamic covalent reactions, 6 transesterification has been widely reported because the exchange reaction mechanism is conveniently applied to the commercially available epoxy-acid/anhydride curing systems. 7 However, most of these epoxy vitrimers depend on transesterification catalysts 8 with high cost, toxicity and low solubility in organic compounds. 9 By adding suitable active low-mass diols/polyols, these abundant primary hydroxyls show much higher reactivity than the β-hydroxyls of the conventional epoxy-acid/anhydride curing systems where the transesterification catalysts are necessary.…”

Ionic liquid‐functionalized reinforcements in epoxy‐based composites: A systematic review

“…[ 40 ] IL can also participate as activators in associative covalently adaptable networks, obtaining a new high performance recyclable thermoset polymer, known as vitrimer . [ 41 ]…”

“…[40] IL can also participate as activators in associative covalently adaptable networks, obtaining a new high performance recyclable thermoset polymer, known as vitrimer. [41] Indeed, the research on these organic salts has been increasing in the last years [42][43][44] and recent reviews on the modification of nano/micro fillers with IL can be found. [45,46] However, none of them focuses on the evaluation of the IL-modified fillers when an epoxy matrix is used, especially no systematic review.…”