Functionalization of PET and PA6.6 woven fabrics

► PET and PA6.6 fabric samples were continuously treated in air, under atmospheric pressure DBD discharge, in industrial conditions. ► The treated samples showed significant improvement in wettability and spreading of distilled water after treatment. ► XPS results showed that treated PA6.6 surfaces presented new oxidation products even after one month stored. ► FTIR spectra showed chemical changes after treatment, revealing the formation of new polar groups like carboxylic acids and amide groups (in PA6.6 case) and the break of covalent bonds present on PET and PA6.6 substrate surfaces.