Westphal College of Media Arts and Design, Shima Seiki Haute Tech Lab at ExCITe, Drexel University , Philadelphia, Pennsylvania 19104, United States.
U.S. Naval Research Laboratory, Code 6910, 4555 Overlook Avenue, S.W., Washington, D.C. 20375, United States.
ACS Appl Mater Interfaces. 2016 Aug 10;8(31):20371-8. doi: 10.1021/acsami.6b05232. Epub 2016 Jul 26.
Self-healing materials, which enable an autonomous repair response to damage, are highly desirable for the long-term reliability of woven or nonwoven textiles. Polyelectrolyte layer-by-layer (LbL) films are of considerable interest as self-healing coatings due to the mobility of the components comprising the film. In this work mechanically stable self-healing films were fabricated through construction of a polyelectrolyte LbL film containing squid ring teeth (SRT) proteins. SRTs are structural proteins with unique self-healing properties and high elastic modulus in both dry and wet conditions (>2 GPa) due to their semicrystalline architecture. We demonstrate LbL construction of multilayers containing native and recombinant SRT proteins capable of self-healing defects. Additionally, we show these films are capable of utilizing functional biomolecules by incorporating an enzyme into the SRT multilayer. Urease was chosen as a model enzyme of interest to test its activity via fluorescence assay. Successful construction of the SRT films demonstrates the use of mechanically stable self-healing coatings, which can incorporate biomolecules for more complex protective functionalities for advanced functional fabrics.
自修复材料能够对损伤做出自主修复响应，对于编织或非编织纺织品的长期可靠性而言，是非常理想的。聚电解质层层（LbL）薄膜因其组成薄膜的组件的可移动性而作为自修复涂层具有相当大的吸引力。在这项工作中，通过构建含有鱿鱼环齿（SRT）蛋白的聚电解质 LbL 薄膜，制造出机械稳定的自修复薄膜。SRT 是结构蛋白，由于其半结晶结构，具有独特的自修复特性和在干燥和潮湿条件下的高弹性模量（>2 GPa）。我们证明了含有天然和重组 SRT 蛋白的多层薄膜能够自我修复缺陷。此外，我们还表明，这些薄膜能够通过将酶掺入 SRT 多层中来利用功能性生物分子。选择脲酶作为感兴趣的模型酶，通过荧光测定法测试其活性。SRT 薄膜的成功构建证明了机械稳定的自修复涂层的使用，该涂层可以掺入生物分子，以实现更复杂的保护功能，用于先进的功能性织物。
