An Investigation on the Effect of Azeotropic Solvent Mixture Pretreatment of 67:33 PET/CO Blended Fabric and Yarn- Part II

摘要

Commercially polyester/cotton blended fabrics are dyed by two-bath or one-bath-two step dyeing method employing suitable dyes and chemicals for each fiber. The two bath dyeing methods are relatively long and complicated and the one bath-two step dyeing procedure is shorter as compared to two bath method but the dyeability is poor. To address this issue, the present investigation focused to formulate a new method in which the polyester/cotton blends can be dyed at lower temperature with an improved dye uptake and fastness properties using disperse and reactive dyes. Polyester/cotton blended fabric and yarns were subjected to pre-treatment using two different azeotropic solvent mixtures and then dyed using disperse and reactive dyes. The dyeability of the pre-treated samples was found to increase tremendously while the fastness properties get slightly improved.