Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 31, Pages 20371-20378Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b05232
Keywords
squid protein; layer-by-layer; enzyme; textile; self-healing
Funding
- Army Research Office [W911NF-16-1-0019]
- Materials Research Institute of the Pennsylvania State University
- Naval Research Laboratory - Office of Naval Research
- Pennsylvania State University
- Drexel University
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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.
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