Researchers from RMIT University have made a groundbreaking discovery that could lead to the development of smart textiles capable of cooling down wearers more efficiently.

The team's study, published in the journal Polymers for Advanced Technologies, has unveiled the remarkable potential of nanodiamonds in enhancing the thermal properties of fabrics.

THE POWER OF NANODIAMONDS

Contrary to popular belief, nanodiamonds are not the same as the diamonds commonly used in jewelry. These microscopic carbon structures possess an incredible thermal conductivity, making them a promising material for temperature regulation. By coating cotton fabric with nanodiamonds using a technique called electrospinning, the researchers have achieved a significant reduction in temperature during the cooling process.

COOLING THE BODY, SAVING ENERGY

The study found that fabrics treated with nanodiamonds showed a temperature decrease of 2-3 degrees Celsius compared to untreated cotton. This may seem like a small difference, but it can make a significant impact on comfort and health when worn for extended periods, especially in practical applications such as sportswear and personal protective clothing.

"While 2 or 3 degrees may not seem like much of a change, it does make a difference in comfort and health impacts over extended periods and in practical terms, could be the difference between keeping your air conditioner off or turning it on," explained Dr Shadi Houshyar, the project lead and Senior Lecturer at RMIT University.

The researchers estimate that the use of this nanodiamond-coated fabric in clothing could lead to a 20-30 per cent energy saving due to reduced air conditioning usage, making it a promising solution for both personal and environmental benefits.

VERSATILE APPLICATIONS

In addition to their impressive thermal properties, the researchers discovered that nanodiamonds also enhance the UV protection of cotton, making it an ideal material for outdoor summer clothing. The team is also exploring the potential of using nanodiamonds to protect buildings from overheating, which could lead to further environmental benefits.

STREAMLINING THE MANUFACTURING PROCESS

The researchers have developed a straightforward manufacturing process using electrospinning to coat the cotton fabric with nanodiamonds. This method is more efficient and reduces the number of manufacturing steps compared to previously tested techniques, which often featured lengthy processes and wastage of nanodiamonds.

FUTURE DIRECTIONS

While the research is still in its preliminary stages, the team is confident in the commercial potential of this nanodiamond-based textile technology. Further studies will focus on the durability of the nanofibres, particularly during the washing process, to ensure the long-term performance and reliability of the cooling fabric.

CONCLUSION

The RMIT University researchers' breakthrough in using nanodiamonds to create smart textiles with enhanced thermal properties has the potential to revolutionise the clothing industry. By harnessing the power of these microscopic marvels, the team is paving the way for a future where comfort, energy efficiency, and environmental sustainability converge in the fabrics we wear.