engleski

Influence of detergent type on the washfastness of polyester fabrics dyed with a dye extracted from Juglans Regia L.

Nowadays, more and more emphasis is being placed on ecology and economy, new harmless processes are being sought in all areas. The focus is on natural dyes as an environmentally friendly and economical product. The process of textile dyeing with natural dyes usually requires large amounts of dyes, and therefore biowaste from other industries, as a source of natural dyes, is used. Before the dyeing process, the fabric was pre- treated with mordant, iron (II) sulphate heptahydrate, which was followed by the textile dyeing process. Dyed samples were washed with different types of detergents. The effects were monitored through the colour fastness of the washed polyester fabrics in the detergent and in comparison with water. The results showed that polyester fabrics treated with iron (II) sulphate heptahydrate had better washfastness, and detergent containing optical brighteners significantly affecting the overall colourfastness.

Polyester ; natural dye ; Juglans Regia L. ; washing ; washfastness

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