Material scientists at the University of Manchester, working in collaboration with universities in China, have created a 'durable and washable, concrete-like' composite material made from antibacterial copper nanoparticles.
Doctors, nurses and healthcare professionals could soon be wearing uniforms brushed with tiny copper nanoparticles to reduce the spread of bacterial infections in hospitals. Material scientists at the University of Manchester, working in collaboration with universities in China, have created a 'durable and washable, concrete-like' composite material made from antibacterial copper nanoparticles.
They have also developed a way of binding the composite to wearable materials such as cotton and polyester, which has proved a stumbling block for scientists in the past.
Bacterial infection is a major issue in hospitals across the UK and has been rising due to its spread on surfaces and clothing. E. coli infections alone killed more than 5,500 NHS patients in 2015 and Government estimates put the cost of such infections to the NHS at £2.3 billion this year alone.
Precious metals, such as gold and silver, have excellent antibacterial and antimicrobial properties, but their commercial use in textiles is prohibitive due to extremely high costs. That means copper is the material of choice for researchers as it has very similar antibacterial properties to gold and silver but is much cheaper. That's why material chemists are focusing their attentions on exploring the possibility of using copper as the ultimate antimicrobial agent.
However, prior to this breakthrough, techniques for binding copper to materials like cotton for medical and antimicrobial textile production had limitations. Now, using a process called 'Polymer Surface Grafting', the research team has tethered copper nanoparticles to cotton and polyester using a polymer brush, creating a strong chemical bond. The researchers say it is this bond which has led to excellent washable properties and durability. These developments could finally see copper-covered uniforms and textiles commercialised in the future.
Lead author, Dr. Xuqing Liu, from the School of Materials, said, "Now that our composite materials present excellent antibacterial properties and durability, it has huge potential for modern medical and healthcare applications."
The researchers tested their copper nanoparticles on cotton as it is used more widely than any other natural fibre and polyester as it is a typical polymeric, manmade material. Each material was brushed with the tiny copper nanoparticles which measure between 1-100 nanometres (nm). 100nm is the equivalent to just 0.0001 millimetres (mm).
The team found their cotton and polyester coated-copper fabrics showed excellent antibacterial resistance against Staphylococcus aureus (S. aureus) and E. coli, even after being washed 30 times. When compared with the traditional process of copper coating the polymer brush technique developed at the University is far more effective.
Liu said, "These results are very positive and some companies are already showing interest in developing this technology. We hope we can commercialise the advanced technology within a couple of years. We have now started to work on reducing cost and making the process even simpler."
Reference: Xuqing Liu. Durable and Washable Antibacterial Copper Nanoparticles Bridged by Surface Grafting Polymer Brushes on Cotton and Polymeric Materials. Journal of Nanomaterials. Vol. 2018, Article ID 6546193, 2018. doi:10.1155/2018/6546193
Source: University of Manchester
Ensuring Safety and Comfort: The Urgent Need for Well-Fitted PPE in Health Care
April 5th 2024Personal protective equipment (PPE) stands as the first line of defense against infectious diseases in health care. Yet, the issue of ill-fitting PPE, especially for women, remains a significant challenge.
COVID-19 Harmonization: Balancing Risks and Benefits of CDC's Latest Move
March 11th 2024The CDC's recent decision to align recommendations for respiratory viruses, particularly COVID-19, has garnered support from the public and infectious disease societies. However, as the Infectious Diseases Society of America (IDSA) lends its backing to the CDC's harmonization efforts, concerns persist regarding the implications of this shift, especially considering the Omicron variant's unique characteristics and the ongoing challenges posed by COVID-19's multi-system impacts.
Voices of Resilience: Q&A With the Editor of "Corona City: Voices From an Epicenter"
March 1st 2024Step into the diverse and poignant world of "Corona City: Voices From an Epicenter" with editor Lorraine Ash, MA. In this insightful Q&A, learn about the origins of this remarkable anthology, the challenges faced in capturing raw, unfiltered narratives of the COVID-19 pandemic, and the lasting impact of these stories on readers and communities alike.
Rare Disease Day 2024: Spotlight on Rare Infectious Diseases
February 29th 2024Rare Disease Day on February 29, 2024, shines a global light on the impact of rare diseases, including rare infectious diseases. With a focus on early diagnosis and treatment access, this day highlights the struggles of those with rare conditions.