首页|Bolstering the Mechanical Robustness of Supramolecular Polymer Network by Mechanical Bond

Bolstering the Mechanical Robustness of Supramolecular Polymer Network by Mechanical Bond

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Supramolecular polymer networks(SPNs)are celebrated for their dynamic nature,yet they often exhibit inadequate mechanical pro-perties.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 poly-mer 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 facilitat-ed 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.

Rotaxane cross-linksDually cross-linked networkSupramolecular polymer networkHost-guest recognitionDynamic materials

Yuan-Hao Wang、Jing-Xi Deng、Jun Zhao、Yi Ding、Li Yang、Zhao-Ming Zhang、Xu-Zhou Yan

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School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai200240,China

Frontiers Science Center for Transformative Molecules,Shanghai Jiao Tong University,Shanghai 200240,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of ShanghaiShuguang Program of Shanghai Education Development FoundationShanghai Municipal Education CommissionStarry Night Science Fund of Zhejiang University Shanghai Institute for Advanced StudyNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory of Polyolefins and Catalysis and Shanghai Key Laboratory of Catalysis Technology for Polyolefins

221221052207115222dz120760322SG11SN-ZJU-SIAS-006223051502210117552333001SKL-LCTP-202301

2024

10.1007/s10118-024-3168-7

高分子科学(英文版)
中国化学会　中国科学院化学研究所

高分子科学(英文版)

CSTPCD
影响因子：0.721
ISSN：0256-7679
年,卷(期)：2024.42(10)