a.School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
b.Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
zhangzhaoming@sjtu.edu.cn (Z.M.Z.)
xzyan@sjtu.edu.cn (X.Z.Y.)
收稿:2024-05-12,
修回:2024-05-25,
录用:2024-05-27,
网络首发:2024-08-20,
纸质出版:2024-10-01
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Wang, Y. H.; Deng, J. X.; Zhao, J.; Ding, Y.; Yang, L.; Zhang, Z. M.; Yan, X. Z. Bolstering the mechanical robustness of supramolecular polymer network by mechanical bond. Chinese J. Polym. Sci. 2024, 42, 1536–1544
Yuan-Hao Wang, Jing-Xi Deng, Jun Zhao, et al. Bolstering the Mechanical Robustness of Supramolecular Polymer Network by Mechanical Bond[J]. Chinese Journal of Polymer Science, 2024, 42(10): 1536-1544.
Wang, Y. H.; Deng, J. X.; Zhao, J.; Ding, Y.; Yang, L.; Zhang, Z. M.; Yan, X. Z. Bolstering the mechanical robustness of supramolecular polymer network by mechanical bond. Chinese J. Polym. Sci. 2024, 42, 1536–1544 DOI: 10.1007/s10118-024-3168-7.
Yuan-Hao Wang, Jing-Xi Deng, Jun Zhao, et al. Bolstering the Mechanical Robustness of Supramolecular Polymer Network by Mechanical Bond[J]. Chinese Journal of Polymer Science, 2024, 42(10): 1536-1544. DOI: 10.1007/s10118-024-3168-7.
We introduced the mechanically interlocked cross-links into the supramolecular polymer network to bolster the mechanical robustness. The dually cross-linked network demonstrated enhanced mechanical properties including strength
Young’s modulus and toughness. The additional sliding motion also endowed the material with better performance in energy dissipation and recovery after deformation.
Supramolecular polymer networks (SPNs) are celebrated for their dynamic nature
yet they often exhibit inadequate mechanical properties. Thus far
the quest to bolster the mechanical resilience of SPNs while preserving their dynamic character presents a formidable challenge. Herein
we introduce [2]rotaxane into SPN to serve as another cross-link
which could effectively enhance the mechanical robustness of the polymer network without losing the dynamic properties. Compared with SPN
the dually cross-linked network (DPN) demonstrates superior breaking strength
Young’s modulus
puncture force and toughness
underscoring its superior robustness. Furthermore
the cyclic tensile tests reveal that the energy dissipation capacity of DPN rivals
and in some cases surpasses
that of SPN
owing to the efficient energy dissipation pathway facilitated by [2]rotaxane. In addition
benefiting from stable topological structure of [2]rotaxane
DPN exhibits accelerated recovery from deformation
indicating superior elasticity compared to SPN. This strategy elevates the performance of SPNs across multiple metrics
presenting a promising avenue for the development of high-performance dynamic materials.
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