Improving UV Protection of Cotton Fabrics Dyed with Peristrophe bivalvis Extract using UV Absorber

Application of chitosan and catechin to improve the color intensity and UV protection in the dyeing of cotton fabrics with natural dyes from peristrophe bivalvis

“…The UPF value with the addition of chitosan treatment is presented in Figure 1. The UPF value of untreated dyed cotton was 2.36 based on the previous study [3], the addition of chitosan before staining with a concentration of 5 g/L increased the UPF value to 4.13. The addition of the chitosan concentration value will increase the UPF value, at a concentration of 10 g/L and 15 g/L the UPF value is 4.36 and 4.37 in the application before the dyeing process.…”

“…To increase the color intensity and fastness, several ways can be done, one of which is by adding chemicals to the coloring process. In dyeing fabrics with natural dyes from Peristrophe bivalvis, this has been done with the addition of a UV absorber by Evitasari and Rahayuningsih [3]. In that study, a benzophenone and benzotriazole UV absorber were used.…”

Dyeing process optimization of chitosan modified cotton dyed with Bixa orellana and Caesalpinia sappan

“…Several attempts have been made to increase the absorption of dyes and increase their fastness to fabrics, by adding UV absorbers [7], TiO2 [8], etc. One of them is by modifying the fabric with chitosan.…”