New techniques for recycling used clothing and producing sustainable fabrics have been discovered by researchers at Cornell University in the US. The process includes chemically dissolving used clothing and repurposing polyester components to create coatings that may be put into apparel and textiles to make them fireproof, antibacterial, or wrinkle-free.
The fabrics are divided into bits and chemically broken down into a mixture of raw materials, dyes, additives, dirt, and esters. Then, a metal solution is added, and the polyester’s building blocks have an affinity for the metal, forming tiny cages known as metal-organic frameworks that sink to the bottom of the mixture, according to Krishna Ramanujan’s article in Cornell Chronicle.
The coatings produced by these cages may then be customised for particular needs, such as the creation of wrinkle-free coatings for permanent press shirts, antimicrobial coatings for medical gowns or scrubs, or fire-retardant coatings for infant or industrial clothing. Despite the presence of contaminants and colours, the controlled crystallisation method is successful.
20% of the world’s solid waste is produced by the textile, garment, and footwear sectors, and many so-called recyclers illegally dump textiles in Asia and Africa. The new approach offers hope for these unsustainable businesses by promoting a circular economy.
As the director of the Textiles Nanotechnology Laboratory and the Rebecca Q. Morgan ’60 Professor of Fibre Science & Apparel Design, Juan Hinestroza said, “One goal of my lab is to create a universal coating that will serve all these purposes, though we are still far from that.
‘Upcycling of Dyed Polyester Fabrics into Copper-1, 4-Benzeedicarboxylate Metal-Organic Frameworks,’ it says. The National Science Foundation contributed to the study’s partial funding, which was then published in the journal Industrial & Engineering Chemistry Research. Yelin Ko, a doctorate student in human-centred design, Tyler Azbell, a doctoral student in Milner’s lab, and Phillip Milner, an assistant professor of chemistry and chemical biology, wrote the paper.
