LAUSR

ABSTRACT In this study, the effect of liposome, which was constituted from soya lecithin and cholesterol, was investigated in wool dyeing. Different types of liposomes were used for dyeing wool fabrics. In the first type, liposomes were utilized as an auxiliary. Liposome was added to conventional dyebath at the beginning of the process for the liposome trials. In the second type, dyes were encapsulated with liposome and then used in wool dyeing. The effects of these two different types of liposomes were compared in conventional dyeing. The dyed woolen fabrics were characterized by fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), solubility in alkali, dye exhaustion aspects and breaking strength tests. Three kinds of dyeing agents – 1:2 metal complex, acid and reactive dyes, were chosen in this current study. The color strength values, fastness to washing, perspiration and light were also determined according to the different color strengths. Fastness results were evaluated according to ANOVA statistical analysis. The dyed fabrics in the presence of liposomes exhibited very good fastness to light (grade 6, 7) and the perspiration, rubbing and washing fastness test results of the samples were much better (grade 4–5) for the liposomal dyeing than for the other samples. In the presence of liposomes, the breaking load of the fabric pecimens was measured as 25 N, whereas without liposomes, it was 19 N. Exhaustion aspects involving dye adsorption and bonding on wool samples were also investigated. The controlled exhaustion of dye on wool samples was dependent on whether the dyeing included liposomes.