Multi-stimuli-responsive self-healing metallo-supramolecular polymer nanocomposites

2016 ◽  
Vol 4 (9) ◽  
pp. 3324-3334 ◽  
Author(s):  
Qifeng Zheng ◽  
Zhenqiang Ma ◽  
Shaoqin Gong

Metallo-supramolecular polymer nanocomposites show a rare combination of strong, tough, and elastic mechanical properties and were able to self-heal via multiple stimuli.

Polymer ◽  
2013 ◽  
Vol 54 (26) ◽  
pp. 6929-6935 ◽  
Author(s):  
Fei Zeng ◽  
Ying Han ◽  
Zhi-Chao Yan ◽  
Chen-Yang Liu ◽  
Chuan-Feng Chen

Author(s):  
Yi Chen ◽  
Xing Zhao ◽  
Yan Li ◽  
Zhao-Yuan Jin ◽  
Yi Yang ◽  
...  

Stimuli-responsive intelligent biomimetic materials are promoting the development of soft robotics. Despite tremendous advances in stimuli-responsive intelligent materials, it is still a challenge to design facile methods to integrate multifunctional...


2012 ◽  
Vol 9 (77) ◽  
pp. 3279-3287 ◽  
Author(s):  
Guoqiang Li ◽  
Harper Meng ◽  
Jinlian Hu

Severe wounds in biological systems such as human skin cannot heal themselves, unless they are first stitched together. Healing of macroscopic damage in thermoset polymer composites faces a similar challenge. Stimuli-responsive shape-changing polymeric fibres with outstanding mechanical properties embedded in polymers may be able to close macro-cracks automatically upon stimulation such as heating. Here, a stimuli-responsive fibre (SRF) with outstanding mechanical properties and supercontraction capability was fabricated for the purpose of healing macroscopic damage. The SRFs and thermoplastic particles (TPs) were incorporated into regular thermosetting epoxy for repeatedly healing macroscopic damages. The system works by mimicking self-healing of biological systems such as human skin, close (stitch) then heal, i.e. close the macroscopic crack through the thermal-induced supercontraction of the SRFs, and bond the closed crack through melting and diffusing of TPs at the crack interface. The healing efficiency determined using tapered double-cantilever beam specimens was 94 per cent. The self-healing process was reasonably repeatable.


2021 ◽  
Vol 290 ◽  
pp. 01037
Author(s):  
Guangpu Zhang ◽  
Zhe Sun ◽  
Miaomiao Li

The microcrack of materials was inevitable in the process of transportation, storage and utilization, which may cause functional failure and resources waste. Inspired by nature, self-healing polymers have attracted significant attention owing to widespread applications in wearable electronics, cartilage replacement, coatings and elastomer. Compared with extrinsic healing, intrinsically healable polymers offer multiple self-healing by supramolecular reversible interactions, such as host-guest interactions, π-π stacking, ionic interactions and hydrogen-bonding. Self-healing polymers based on quadruple hydrogen bonds have been extensively investigated due to its high thermodynamic stability and rapid kinetic reversibility, and have been well developed for the past two decades. In this paper, the strategies and designs of self-repairing polymers based on quadruple hydrogen bond were classified and summarized, including main-chain self-healing polymers, side-chain self-healing polymers and supramolecular self-healing polymers. It is expected that quadruple hydrogen bonding can be construct more robust, highly tough, multi-stimuli-responsive, and fast self-healing supramolecular polymer, and is potential to be applied to numerous civilian and military fields in the future.


2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.


2021 ◽  
Author(s):  
Zhanyu Jia ◽  
Guangyao Li ◽  
Juan Wang ◽  
shouhua Su ◽  
Jie Wen ◽  
...  

Conductivity, self-healing and moderate mechanical properties are necessary for multifunctional hydrogels which have great potential in health-monitor sensor application. However, the combination of electrical conductivity, self-healing and good mechanical properties...


Author(s):  
Xiaobin Lin ◽  
Qingyi Xie ◽  
Chunfeng Ma ◽  
Guangzhao Zhang

Silicone elastomer coatings have attracted increasing attention owing to its eco-friendly nature, excellent fouling release ability and drag-reducing property. However, the poor mechanical properties and lack of fouling resistance limits...


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