رنگرزی نخ پشمی با پسماند گل محمدی حاصل از گلاب‌گیری و مقایسه آن با رنگزای پوست انار

 Every year, during rose water extraction a huge amount of damask rose residue is produced. The transportation and disposal of these waste materials create some problems including an increase in the price of the produced rose water. In this study the use of damask rose residues in dyeing wool is assessed and a method for its use as a colorant in natural dyeing is offered. Dyeing was carried out by using the material along with some mordants such as alum, copper sulphate, iron sulphate, chlorine and tin and also without mordant by adopting pre-mordanting technique. Various amounts of mordants and colorants were used. Comparing the obtained color hue with those from other traditional colorants, it was observed that the color hue obtained from damask rose residues was greatly similar to the color hue gained from pomegranate peel. These two color hues were analyzed and compared using the carpet weavers’ views as well as measuring wash and light fastness properties using experimental methods. The results indicate that damask residues can be used as a new natural colorant particularly in carpet production. This can provide a new colorant with minimum expenses, reduce the price of rose water extraction, and prevent environmental pollution.