Amendments of the Structural and Physical Properties of Cotton Fabrics Dyed with Natural Dye and Treated with Different Mordants

摘要

In the present work, cotton fabrics were dyed with natural dye extracted from the barks of a plant named Calligonum comosum. The dyed fabrics were mordanting with four mordants (potassium aluminium sulphate, black eco-crumb, ferrous chloride, and ferrous sulphate) applied separately. The effect of the mordants was described by XRD, FT-IR, SEM, DSC and TGA techniques. From the obtained results, various bands ratio displayed differences was observed; FT-IR shows a decrease in O-H band intensity; SEM images illustrate that the fabric was firmly woven. Thermal results propose the improvement of the thermal molecular mobility of the cellulose molecules. The evaluation of antimicrobial activity was tested using the modified streak method. The data indicated that the dyed and treated cotton fabrics with ferrous chloride and ferrous sulphate mordants have higher crystallinity indices in agreement with the obtained thermal data and exhibited higher thermal stability as well as expressively altered the morphological structure of cotton fabrics, and imparted a series of functionalities including; antioxidant and antibacterial properties to cotton fabrics.