Antimicrobial Coating Developed for Application on Hard Surfaces

Researchers at the University of Nottingham have developed an antimicrobial coating that may be used in a range of design contexts where hygiene is a concern. The coating, formulated as a paint, has been tested for its ability to kill various pathogens, including MRSA, influenza, and SARS-CoV-2, once dried on a surface.

Technical Development and Composition
The research team from the University’s School of Pharmacy collaborated with Indestructible Paint, a manufacturer of high-performance coatings, to create a paintable resin incorporating chlorhexidine—a widely used antiseptic. Once the coating is applied and dried, it becomes active in neutralising bacteria and viruses on contact. The formulation is designed not to leach or degrade with surface contact, according to findings published in Scientific Reports.

The paint can be applied to hard, non-porous materials such as plastics and metals. Initial trials demonstrated efficacy in preventing microbial growth on treated surfaces.

Potential Applications in Design
Although the product was initially explored for use in healthcare environments, its application is not limited to this context. Designers in sectors such as transport, product design, architecture, and interior design may consider its use in areas where high-touch surfaces present a risk of contamination. Examples include tray tables, armrests, handrails, and sanitary facilities.

For interior and product designers, particularly those involved in healthcare, public transport, or hospitality design, the material may offer a practical option for addressing hygiene requirements. It may also be of interest to automotive and aerospace designers, where shared and compact environments require durable and cleanable materials.

Research Context
According to Dr Felicity de Cogan, Associate Professor in Pharmaceutical Sciences, surfaces in public and clinical environments can act as long-term reservoirs for bacteria, some of which may contribute to the spread of antimicrobial resistance. The research highlights the importance of developing materials that minimise these risks through passive antimicrobial action.

The project is in an early development phase, with further testing planned. Indestructible Paint has expressed interest in exploring commercial opportunities for use in sectors such as aviation, rail, and industrial design.

Source: University of Nottingham
Photo: Malte Luk