Rezaul Karim, Tarikul Islam and Abdullah Al Mamun
Natural dyes may be defined as the dyes which are extracted from the flower petals, leaves, barks, steams to ensure environmental friendly dyeing of the sample. Natural dyes are very popular for their different hues and environmental friendly nature but most of the natural dyes are non-substantive and must be applied on textiles with the help of mordants. In this study, natural dyes were extracted from marigold flower petals and applied on 100% cotton knitted fabric in exhaust method using six different metallic salts: K2Cr2O7, FeSO4, NiSO4, CuSO4.5H2O, potash alum, and SnCl2 during pre-mordanting prior to dyeing. The consequences of altering different types of mordanting agents during mordanting were evaluated by means of various fastness properties. From overall observation it has been found that the fastness properties of the dyed sample having mordanted with potash alum showed excellent result in case of all fastness properties.
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