การพิมพ์ผ้าฝ้ายโดยใช้สารให้สีจากเปลือกมังคุด

This research was concerned a printing on cotton fabrics with dye powder from mangosteen rind. In this study the dye powder was composed of dye’ s solution extracted from mangosteen rind and maltodextrin 15 % . The dye powder was applied to a cotton fabric by screen printing technique and a pigment based print paste was used as a print paste in the printing process. Aluminium potassium sulphate (AlK(SO4)2·12H2O )and Iron (II) sulphate (FeSO4·7 H2O) were used as mordants in post-mordanting process. The influences of mordanting on colour appearance and fastness properties of printed fabrics were investigated. The colour fastness to washing and rubbing of printed fabrics was performed according to the present ISO standard. The results show that the post- mordanting can improve the colour fastness properties of printed fabrics. The ratings of colour fastness to washing and rubbing of the printed fabrics with the mordant were good. The appropriate amount of the mordant is 5 grams per liter and duration in the range of 5 minutes to 15 minutes seem to be a suitable time for the post- mordnating process. The type of mordant produced an effect on the colour appearance of the printed fabrics after mordanting.