Surface activation of textile fibers by plasma DBD for dyeing with teak leaf

The use of natural dyes is a field of great interest to solve the problems related to environment pollution and health risks. The objective of this research was to study the plasma discharge of double dielectric barrier (DDB) to modify the fabrics surfaces of polyamide 6.6 (PA66), silk (SK) and cotton (CO) dyed with leaf extract of teak (Tectona grandis). It was also aimed the improvement in the penetration and fixation properties to the natural dyes even without using metal mordants, which are toxic and usually used in this type of dyeing. The dye extract obtained from the teak leaves was chemically characterized by using UHPLC/QTOF-MS. The color parameters were calculated by means of spectroscopy to evaluate the color intensity (K/S) and its fastness was evaluated for washing, friction and perspiration.