抄録
Per- and polyfluoroalkyl substances （PFAS） are defined as fluorinated substances that contain at least one fully fluorinated methyl or methylene carbon atom. In air filtration applications, PFAS are commonly used to impart water and oil repellency to filter media. However, the carbon and fluorine in PFAS are strongly bonded, so they are not easily decomposed, and furthermore, there are concerns about adverse health effects. In this study, PFAS-free air filter media are developed using a water repellent composed of fluorine-free hydrocarbon polymer. The newly developed filter media have the equivalent basic media properties to the conventional filter media containing fluorinated repellent. On the other hand, their behaviors toward oil droplets are different.
