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|a 10.1002/adma.202500295
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|a eng
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| 100 |
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|a Zhang, Xing
|e verfasserin
|4 aut
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|a Shape Memory Networks With Tunable Self-Stiffening Kinetics Enabled by Polymer Melting-Recrystallization
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|c 2025
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|a Text
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|a ƒaComputermedien
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|a Date Revised 18.07.2025
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2025 Wiley‐VCH GmbH.
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|a Shape memory polymers (SMPs) are deformable materials capable of recovering from a programmed temporary shape to a permanent shape under specific stimuli. However, shape recovery of SMPs is often accompanied by the evolution of materials from a stiff to soft state, leading to a significant decrease in strength/modulus and thereby impacting their practical applications. Although some attempts are made to pursue the SMPs with self-stiffening capability after shape recovery, the modulus increase ratio is much limited. Inspired by the recrystallization process of CaCO3 during crab molting, a novel and universal strategy is developed to construct water-free self-stiffening SMPs by using a single thermal stimulus through harnessing the polymer melting-recrystallization. The shape recovery is achieved through the melting of polymer primary crystals, followed by the self-stiffening via polymer recrystallization at the same recovery temperature, in which the modulus increase rate and ratio can be programmed in a wide range. Additionally, conceptual applications of these self-stiffening SMPs as artificial stents with self-enhancing supporting function are successfully demonstrated. This work is believed to provide new insights for developing the advanced shape memory devices
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|a Journal Article
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|a bioinspired materials
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|a polymer recrystallization
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|a self‐stiffening function
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4 |
|a shape memory polymers
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| 700 |
1 |
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|a Zhou, Yichen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chen, Haoran
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Ying
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Junfeng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bao, Yongzhong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shan, Guorong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yu, Chengtao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pan, Pengju
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 37(2025), 28 vom: 18. Juli, Seite e2500295
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:37
|g year:2025
|g number:28
|g day:18
|g month:07
|g pages:e2500295
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|u http://dx.doi.org/10.1002/adma.202500295
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