... peel (PO) are known as two important sources of tannin and are bulky wastes. Because of the high percentage of tannin, these materials can be used as a natural source for the preparation of bio-mordant in the dyeing process. Design/methodology/approach In this study, Reseda and Madder were used...

...Arnab Sen; Avijit Bhowal; Siddhartha Datta Purpose This paper aims to investigate the feasibility of developing an eco-friendly dyeing process for a regenerated polyester fiber (polytrimethylene terephthalate) using a natural dye (Lac) and bio-mordant. Design/methodology/approach The effects...