Waterproof/breathable linings have revolutionized the world of outdoor clothing, allowing individuals to stay dry and comfortable even under the most extreme weather conditions. These linings use advanced technology to ensure that moisture from rain or snow doesn't penetrate the fabric while simultaneously allowing sweat and heat to escape. Commonly used in coats and jackets, these linings are made from synthetic polymers that are chemically treated to achieve their unique properties.
The Chemistry Behind Waterproof/Breathable Linings
At the heart of waterproof/breathable technology are polymers such as polytetrafluoroethylene (PTFE) and polyurethane (PU). These materials are treated with chemicals to alter their molecular structure, enhancing their ability to repel water while maintaining breathability. While these coatings are effective in keeping the elements at bay, there is growing interest in understanding the potential health effects these chemicals may have on the human body.
Observed Effects on Human Health
Research into the health impact of chemicals used in waterproof/breathable linings is still emerging. However, some studies have raised concerns about the potential release of perfluorochemicals (PFCs) during the production and disposal of these materials. PFCs have been associated with adverse health effects, including hormonal imbalances and developmental issues. It's important to note that while these risks exist, the likelihood of experiencing negative health effects from wearing garments with waterproof/breathable linings is considered low.
Safety Considerations and Alternatives
For those concerned about the possible health implications, there are safer alternatives available. Some companies have begun using PFC-free treatments to achieve waterproofing without compromising consumer safety. Additionally, combining waterproof features with natural breathability from materials like wool and cotton can offer a healthier and more environmentally friendly option.