| Autor: |
Cheng, Bing-Xu1 (AUTHOR), Lu, Chen-Chen1 (AUTHOR), Li, Qing1,2 (AUTHOR), Zhao, Si-Qi1 (AUTHOR), Bi, Chang-Shun1 (AUTHOR), Wu, Wei3 (AUTHOR), Huang, Chong-Xing1 (AUTHOR), Zhao, Hui1,2,4,5 (AUTHOR) zhh@gxu.edu.cn |
| Předmět: |
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| Zdroj: |
Journal of Polymers & the Environment. Dec2022, Vol. 30 Issue 12, p5252-5262. 11p. |
| Abstrakt: |
A type of waterborne polyurethane (WPU) with excellent self-healing and recyclable properties was successfully prepared by introducing Diels–Alder (DA) reaction groups into it. FT-IR was used to verify the successful synthesis of samples and the retro-DA reaction in the WPU-DA films. It was found that the self-healing efficiency of the WPU-DA-4/4 films was 72.8%. After four cycle times, the self-healing efficiency could still achieve 49.7%. Moreover, the WPU-DA film could be applied as the positive friction layer to prepare a triboelectric nanogenerator (TENG). Working in contact-separation mode, the electrical outputs with 2 × 2 cm2 area can reach 58 V, 3.2 µA, 17.6 nC, respectively. It is also interesting to find that the electrical output properties of the TENG after damage-healed can be restored to more than 90% of the original one. The cross-linked WPU had good reprocessability and had great potential application prospects in intelligent materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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