Browsing by Author "Muhammad Arslan Ahmad"

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    Effect of different dye classes on the properties of cotton fabric
    (UMT Lahore, 2024-08-08) Sheikh Subhan Younas; Muhammad Arslan Ahmad
    The present study explores the effect of two types of dyes belonging to different classes i.e., reactive dye and direct dye on physical and mechanical properties of cotton fabrics. Dyeing in textile is the most important part as it not only makes fabric beautiful but also helps to different functional property of any type of fabric. Reactive dyes that bond via covalent bonds to fibers result in the brightest colors with excellent fastness properties with tensile and tear strength typically affected depending on conditions. While direct dyes have the best affordability and overall simplicity of application compared with reactive, they are less wash fast but exhibit normal tensile and tear strength. The present research work analyzes influence of reactive (RD) and direct dyes (DD) on physio-mechanical properties of cotton fabrics at 2%, 3%, and 4% of dye concentration. This is followed by the results of tensile strength, tear strength, crock fastness, washing fastness, light fastness, perspiration fastness, and water fastness. The findings of the study show that RD samples possessed higher fastness properties than the DD samples, especially in light fastness where the DD samples posed a very poor score of 1. The mechanical tests showed that the RD samples in most of the cases diminished the tensile strength in lower concentration but enhanced tear strength at higher concentration. On the other hand, DD samples showed relatively higher and constant tensile strength while the tear strength increased with the increase in dye concentrations.