Water-Resistant Antibacterial Coatings Using Cetylpyridinium Chloride - Graphene Oxide Composites

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Hospital-acquired infections pose a significant threat, necessitating advanced infection control strategies.
• Durable antibacterial surface coatings are crucial where disposable materials are impractical, especially for vulnerable patient populations.

Purpose of the Study:

• To structurally characterize cetylpyridinium chloride-graphene oxide (CPC-GO) hybrid materials.
• To evaluate the long-term antibacterial efficacy and washability of CPC-GO coatings for medical applications.

Main Methods:

• Structural characterization using UV-vis spectroscopy, X-ray diffraction, thermogravimetric analysis, SEM, and AFM.
• Assessment of antibacterial performance against representative bacteria.
• Evaluation of coating durability through multiple washing cycles.

Main Results:

• Formation of CPC-GO complex confirmed via ionic bonds, maintaining a planar structure.
• CPC-GO coatings exhibited superior antibacterial activity compared to controls, even after repeated washing.
• Excellent surface retention of CPC-GO composite demonstrated.

Conclusions:

• CPC-GO hybrid materials offer a stable, long-lasting antibacterial solution.
• These coatings show potential for next-generation antibacterial applications in challenging environments like medical devices.
• This strategy enhances existing antibacterial agents using nanomaterials for improved clinical utility.