June 2020

Mohammad Anas Wahaj | 26 jun 2020

COVID-19 has brought to the fore the issue of medical textiles as masks, gowns and other personal protective equipment (PPE) are necessary for safeguarding healthcare workers against virus infections. The use of mask specifically became more widespread among general public and the debate centered around the type of material of the fabric that can minimize spread of the virus from person to person and also be affordable. As the demand for PPEs rose the challenge for the scientific and manufacturing community has been to find a way to provide better protection while allowing for the safe reuse of these items. Team of researchers from University of Pittsburgh - Anthony J. Galante, Sajad Haghanifar, Eric G. Romanowski, Robert M. Q. Shanks, Paul W. Leu - has created a textile coating that can not only repel liquids like blood and saliva but can also prevent viruses from adhering to the surface. Their research titled, 'Superhemophobic and Antivirofouling Coating for Mechanically Durable and Wash-Stable Medical Textiles', was recently published in the journal ACS Applied Materials and Interfaces. Lead author of the paper, Mr. Galante, who is the Ph.D. student in industrial engineering at Pitt, says, 'Recently there's been focus on blood-repellent surfaces, and we were interested in achieving this with mechanical durability.' The coating is unique as it is able to withstand ultrasonic washing, scrubbing and scraping. Prof. Leu, co-author and associate professor of industrial engineering, says, 'The durability is very important because there are other surface treatments out there, but they’re limited to disposable textiles. You can only use a gown or mask once before disposing of it. Given the PPE shortage, there is a need for coatings that can be applied to reusable medical textiles that can be properly washed and sanitized.' Prof. Romanowski, Research Director at Charles T. Campbell Microbiology Laboratory, says, 'As this fabric was already shown to repel blood, protein and bacteria, the logical next step was to determine whether it repels viruses. We chose human adenovirus types 4 and 7, as these are causes of acute respiratory disease as well as conjunctivitis (pink eye)...As it turned out, the adenoviruses were repelled in a similar way as proteins.' Prof. Shanks, Director of Basic Research in the Department of Ophthalmology at Pitt, says, 'Adenovirus can be inadvertently picked up in hospital waiting rooms and from contaminated surfaces in general. It is rapidly spread in schools and homes and has an enormous impact on quality of life - keeping kids out of school and parents out of work. This coating on waiting room furniture, for example, could be a major step towards reducing this problem.' The next step for the researchers will be to test the effectiveness against betacoronaviruses, like the one that causes COVID-19. Read on...

University of Pittsburgh News: Pitt Researchers Create Durable, Washable Textile Coating That Can Repel Viruses
Author: Maggie Pavlick