Dyeing of natural and synthetic fibres in supercritical carbon dioxide media

In this study, colourability to most widely-used types of fibers in mediasupercritical carbon dioxide was researched, conventional dyeing with dyeing withinscCO2 media was compared advantages and disadvantages. The sorts of experimentswere realized within water and scCO2 media. The experiments consisted of dyeingmordant wool fibers with natural dyestuffs and dyestuff shiff-base ligand, multifiberwith disperse dyestuff. Supercritical carbon dioxide?s the conditions were pressure of2000-2500 psi and temperature of 80-100 oC for dyeing within scCO2 experiments.Solubility of natural dyestuff by the aid of microemulsion technique which is a solutionlead for problem of insolving hydrophilic dyestuff within scCO2 media is searched.