Researchers from China and Belgium have engineered a polyurethane coating suitable for diverse surfaces, notable for its self-healing capabilities following damage and its ability to eliminate microbes upon contact. This development has been detailed in the Chinese Journal of Polymer Science.
The substance manages to mend scratches in approximately one hour when heated to 140 °C. Introducing additional mechanical stress speeds up this recovery process to merely 20 minutes. Crucially, even after multiple rounds of cutting and reshaping, the coating maintains its inherent chemical and physical characteristics.
Antimicrobial assessments confirmed its potency against both E. coli and Staphylococcus aureus. Bacterial eradication occurs strictly via direct surface interaction, without the release of any harmful substances.
Light transmission levels reach 90–91%, making it comparable to pristine glass. The material exhibits a hardness rating of 1H and adhesion scores ranging from 4B to 5B. These properties suggest suitability for safeguarding displays, instruments, and marine portholes.
Presently, this technology remains at the laboratory prototype stage; the inclusion of selenium-based constituents results in higher costs compared to conventional materials. Scientists project an optimistic timeframe of 5 to 7 years for its potential implementation. High-value equipment—such as deep-sea vehicles, maritime sensors, and surgical tools—are likely candidates to be the first beneficiaries of this innovation.
About the Author
