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

Abstract

First of all, let us praise and thank Allah SWT, Almighty God, for His grace, we are all in good health so that we can attend "the 4 th International Conference on Engineering and Applied Technology (ICEAT) 2020 ". This activity is held in the form of a Blended Learning Conference, in which some participants attend offline and some online.The activity of the 4th International Conference on Engineering and Applied Technology (ICEAT) 2020 which was originally held on June 29 -June 30 2020 in Magelang, coincided with the 48th Muhammadiyah Congress in Solo. However, due to the Covid'19 outbreak that hit the Indonesian nation starting in March 2020, ICEAT activities were postponed.