Standardization of recipe for dyeing staining free polyester/cotton blended yarns

摘要

Disperse dyes give excellent overall fastness properties with polyester where it gives very poor fastness properties with cellulose. The reason behind this is disperse dyes does not have any substantivity & affinity towards cotton & cotton cannot be dyed at very high temperature as like Polyester. Hence P/C blend dyeing will not give sufficient fastness properties compared to 100% Polyester. Normally in industries a recipe used for dyeing 100% Polyester is also applied for different proportions of P/C blends and then it is topped up with reactive dyes to match the shade. But it will not give sufficient fastness properties.rnThe object of the work is to standardize (P/C blend worked out with three different proportions) and to formalize the individual recipe for each proportion to improve the fastness properties of blended fabrics.