A NOVEL ECO - FRIENDLY DYEING OF CATIONIZED POLYESTER FABRICS USING CURCUMIN NATURAL DYE

Due to the cheap in prize, high production and long life of polyester fabrics, its application is wide in apparel industry. But, concerning to their hydrophobicity and soiling properties it makes the wearer for less comfort. This is because of the absence of water absorbing group in it. This work presents an ecofriendly method for dyeing polyester fabrics wit h curcumin natural dyes. Firstly alkali treatment of the substrate were done then cationization to activate fibers and improve dyeability of polyester. Fabrics are pretreated with different concentrations of chitosan for different periods of time. Dyeabil ity of the treated samples was investigated in terms of their colour strength expressed as K/S in addition to fastness to washing and light.