ZAT PEWARNA ALAMI TEKSTIL DARI KULIT BUAH MANGGIS

Abstract

Synthetic dyes are usually carcinogenic, thus it is necessary to use an alternative dyes to reduce the application of synthetic dyes. In this research the peel of mangosteen was studied for natural dyes. The peel of mangosteen contains antosianin and tanin pigment. It was extracted in soxhlet equipment and in a stirred tank by ethanol as solvent. The next processing were distillation, crystallization and drying. In a stirred tank the temperature was done between 30-70 oC with 10 oC interval. The higher temperature, the higher dyes result at the same time. The process produced 19.45 % dyes powder by soxhlet equpiment and 13.15 % by stirred tank at 70 oC. Then the dyes powder was tested in colouring and colour fading to the white cloth by laundrymeter and crockmeter. The colour fading test for laundrying showed that the grey scale value and the stainning scale value were 2-3 (less). But the colour fading test for polishing showed that the stainning scale value were 3-4 (good enough) for dry polishing and 3 (enough) for wet polishing.