2020
DOI: 10.1021/acsami.0c09712
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Abstract: Vitrimers endow cross-linked polymers with malleability and reprocessability via exchange reactions. However, designing of reprocessable, shape-memory polymer materials with high strength via a catalyst-free method remains a challenge under mild conditions. Here, we propose a facile strategy to address this dilemma by introducing the exchangeable imine bond and N-coordinated boroxine into a polybutadiene (PB)-based network. Specifically, PB grafted with 2-aminoethanethiol is reacted with the formyl group of ph… Show more

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Cited by 58 publications
(56 citation statements)
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References 64 publications
(79 reference statements)
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“…To realize the reversibility of crosslinking network, previous works replace sulfur crosslinking network with dynamic covalent network. 6,7 However, specialized and complicated chemical synthesis and modifications to introduce the dynamic covalent bonds are necessary in the elastomers, which is completely different from the conventional sulfur crosslinking system. Such previous strategies cannot enable conventional sulfur crosslinking network with reversibility.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…To realize the reversibility of crosslinking network, previous works replace sulfur crosslinking network with dynamic covalent network. 6,7 However, specialized and complicated chemical synthesis and modifications to introduce the dynamic covalent bonds are necessary in the elastomers, which is completely different from the conventional sulfur crosslinking system. Such previous strategies cannot enable conventional sulfur crosslinking network with reversibility.…”
Section: Introductionmentioning
confidence: 99%
“…How to realize the rearrangements of sulfur crosslinking network has been an unsolved problem in rubber industry. To realize the reversibility of crosslinking network, previous works replace sulfur crosslinking network with dynamic covalent network 6,7 . However, specialized and complicated chemical synthesis and modifications to introduce the dynamic covalent bonds are necessary in the elastomers, which is completely different from the conventional sulfur crosslinking system.…”
Section: Introductionmentioning
confidence: 99%
“…This inhibits their use in soft‐machine applications when large mechanical stresses or structural stability are required. Associative DPNs show the most promise in resolving these issues, due to their constant cross‐link density, and recent work has shown that including different bonds capable of associative exchange in a single network can increase the tensile strength of DPN elastomers [61] . However, in these systems care must be taken to ensure that cross‐reactions do not occur between the different groups, which could result in the formation of a permanently cross‐linked network.…”
Section: Discussionmentioning
confidence: 99%
“…Associative DPNs show the most promise in resolving these issues,d ue to their constant cross-link density,a nd recent work has shown that including different bonds capable of associative exchange in as ingle network can increase the tensile strength of DPN elastomers. [61] However,i nt hese systems care must be taken to ensure that cross-reactions do not occur between the different groups,w hich could result in the formation of ap ermanently cross-linked network. Creep resistance has also been increased in associative DPNs by including up to 40 mol %ofpermanent covalent bonds, [8b] or by the incorporation of bonds with different exchange mechanisms,such as supramolecular interactions.…”
Section: Discussionmentioning
confidence: 99%