Figures & data
Scheme 1. Schematic view of the formation of composite agent between onion skin extract and chitosan.
Figure 1. FT-IR analysis of a. chitosan and onion extract b. composite powder c. untreated cotton, composite-coated cotton and composite-coated cotton fabric with citric acid.
Figure 2. SEM micrographs of composite (a), untreated cotton fabric (b), composite-coated cotton fabric (c), composite-coated cotton fabric with citric acid (d).
Figure 3. (A) TGA analysis of the CS and onion extract. (b) TGA analysis of the CS-OS composite.
Figure 4. TGA analysis of untreated cotton fabric, composite-coated cotton fabric, and composite-coated cotton fabric with citric acid.
Figure 5. Percentage of antibacterial activity of composite-coated cotton.
Figure 6. Antioxidant activity of composite-coated cotton.
Figure 7. The retention of free-radical scavenging and anti-bacterial properties after several wash cycles.
