Zhang Baolin, Zhang Ping, Zhang Hanzhi, Yan Casey, Zheng Zijian, Wu Biao, Yu You
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, China.
Nanotechnology Center, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong, 999077, China.
Macromol Rapid Commun. 2017 Aug;38(15). doi: 10.1002/marc.201700110. Epub 2017 May 10.
An innovative self-healing polydimethylsiloxane (PDMS) elastomer, namely, PDMS-TFB, is reported by incorporating the reversibly dynamic imine bond as the self-healing points into the PDMS networks. The PDMS-TFB elastomer features good optical transmittance (80%) in full visible light region, high stretchability (≈700%), and excellent autonomous self-healing ability at room temperature. Surprisingly, the self-healing behavior can take place in water and even at a temperature as low as -20 °C in air, showing a promising outlook for broader applications. As a proof-of-concept, this study demonstrates the use of the PDMS-TFB elastomer for preparing anticorrosion coating and adhesive layer, and also the use of such an elastomer to be the platform for fabricating the flexible interconnector and chemical sensor. Remarkably, no significant difference is observed between the pristine and healed samples. Taking full advantage of these unique properties, it is anticipated that such a PDMS-TFB elastomer shows wide applications in the fields of materials science, electronics, biology, optics, etc.
通过将可逆动态亚胺键作为自愈合点引入聚二甲基硅氧烷（PDMS）网络中，报道了一种创新的自愈合聚二甲基硅氧烷（PDMS）弹性体，即PDMS-TFB。PDMS-TFB弹性体在整个可见光区域具有良好的透光率（80%）、高拉伸性（约700%）以及在室温下出色的自主自愈合能力。令人惊讶的是，自愈合行为可以在水中甚至在空气中低至-20°C的温度下发生，这为更广泛的应用展示了广阔的前景。作为概念验证，本研究展示了使用PDMS-TFB弹性体制备防腐涂层和粘合剂层，以及使用这种弹性体作为制造柔性互连器和化学传感器的平台。值得注意的是，原始样品和愈合后的样品之间未观察到显著差异。充分利用这些独特性能，预计这种PDMS-TFB弹性体在材料科学、电子学、生物学、光学等领域具有广泛的应用。
