THE EFFECT OF CATIONIC SURFACTANT TREATMENT ON THE DYEABILITY OF COTTON AND SILK FABRICS WITH NATURAL DYE FROM BROWN SEAWEEDS SARGASSUM SP

This study focuses on the surface modification of cotton and silk fabrics which might improve their dyeability to Sargassum sp. extracts. The extraction was performed by macerating the Sargassum sp. powder in methanol solution at 600C for 48 hours in dark room. The extracted colourant was measured with UV-vis Spectrophotometer to analyse the peak absorbance (?max) as well as to estimate the pigments content in Sargassum sp. Exhaustion dyeing with simultaneous mordanting procedure were then performed at 850C for 60 minutes on treated and untreated cotton and silk fabrics with Cetyl Trimethyl Ammonium Bromide (CTAB) at different concentrations. The dyed samples were then analysed their colourimetrics and fastness properties in accordance to MS ISO standard. The results showed that the application of CTAB gave higher colour differences and colour strength values which indicate that the dyeability of those fabrics was increased significantly with out diminishing their fastness properties.