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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202300937
|2 doi
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|a pubmed24n1182.xml
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|a eng
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|a Xu, JianHua
|e verfasserin
|4 aut
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|a Room-Temperature Self-Healing Soft Composite Network with Unprecedented Crack Propagation Resistance Enabled by a Supramolecular Assembled Lamellar Structure
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 28.06.2023
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|a Date Revised 28.06.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a Soft self-healing materials are compelling candidates for stretchable devices because of their excellent compliance, extensibility, and self-restorability. However, most existing soft self-healing polymers suffer from crack propagation and irreversible fatigue failure due to easy breakage of their dynamic amorphous, low-energy polymer networks. Herein, inspired by distinct structure-property relationship of biological tissues, a supramolecular interfacial assembly strategy of preparing soft self-healing composites with unprecedented crack propagation resistance is proposed by structurally engineering preferentially aligned lamellar structures within a dynamic and superstretchable poly(urea-ureathane) matrix (which is elongated to 24 750× its original length). Such a design affords a world-record fracture energy (501.6 kJ m-2 ), ultrahigh fatigue threshold (4064.1 J m-2 ), and outstanding elastic restorability (dimensional recovery from 13 times elongation), and preserving low modulus (1.2 MPa), high stretchability (3200%), and high room-temperature self-healing efficiency (97%). Thereby, the resultant composite represents the best of its kind and even surpasses most biological tissues. The lamellar 2D transition-metal carbide/carbonitride (MXene) structure also leads to a relatively high in-plane thermal conductivity, enabling composites as stretchable thermoconductive skins applied in joints of robotics to thermal dissipation. The present work illustrates a viable approach how autonomous self-healing, crack tolerance, and fatigue resistance can be merged in future material design
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|a Journal Article
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|a crack resistance
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|a hierarchically lamellar structures
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|a interfacial assembly
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|a self-healing
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|a soft composites
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|a Li, YuKun
|e verfasserin
|4 aut
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|a Liu, Tong
|e verfasserin
|4 aut
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|a Wang, Dong
|e verfasserin
|4 aut
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|a Sun, FuYao
|e verfasserin
|4 aut
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|a Hu, Po
|e verfasserin
|4 aut
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|a Wang, Lin
|e verfasserin
|4 aut
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|a Chen, JiaoYang
|e verfasserin
|4 aut
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|a Wang, XueBin
|e verfasserin
|4 aut
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|a Yao, BoWen
|e verfasserin
|4 aut
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|a Fu, JiaJun
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 26 vom: 01. Juni, Seite e2300937
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:26
|g day:01
|g month:06
|g pages:e2300937
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|u http://dx.doi.org/10.1002/adma.202300937
|3 Volltext
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