The scale of the problem of replacing ‘forever chemicals’ PFAS

By Rebecca Trager | Chemistry World | October 10, 2024

Read the full article by Rebecca Trager (Chemistry World)

"Nearly 15,000 substances are thought to belong to the family of per- and polyfluoroalkyl substances (PFAS), which have been linked to a range of environmental and health problems. However, these compounds have become a vital, but largely unsung, part of modern life and are used in a vast array of ways. Plans are afoot in many countries to phase out many of these chemicals, but while it is relatively simple to replace them in some products, it is much harder in others.

Clothing

PFAS are attractive for clothing, especially raincoats, children’s apparel and athleticwear, because they confer water- and stain- resistance and make garments more breathable. Recognition of the harmful effects of PFAS has meant that some manufacturers are already moving away from them.

Several big-name outdoor clothing manufacturers are pledging to go totally PFAS-free. For example, Patagonia – a major US retailer of outdoor recreation clothing – has promised to convert all of its durable water-repellent membranes and finishes to non-fluorinated alternatives by 2025. In spring 2024, about 96% of its materials by weight were water-proofed without PFAS. There is no one-size-fits-all solution in clothing, however. One PFAS alternative might work on nylon but not on polyester, Patagonia explains."