Dyeing of cotton fabrics using some natural dyes part II: Some studies on dyeing properties of cotton fabrics using chelidonium majus (roots) (Article)

Egyptian Journal of Chemistry

Volume 51, Issue SPEC. ISS., 2008, Pages 141-157

Kamel, M.M. , 

Youssef, B.M., 

Helmy, H.M.

 

Textile Research Division, National Research Centre, Cairo, Egypt

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Abstract

THE PRE-TREATED cotton fabric with tannic acid (60g/l) was dyed in a bath containing natural colouring matter extracted from vegetable plants Chelidonium majus (roots). Factors affecting dyeing properties such as concentration of colouring matter as well as pH values, time and temperature of dyeing bath were studied. It was found that the most suitable dyeing properties are obtained when colouring matter is obtained from 18 g Chelidonium majus (roots)/ 100 ml water using 5g/l sodium chloride, L.R 1:50, pH 6, dyeing was continued for 30 min at 70°C. Environmentally friendly mordants such as copper sulphate, ferrous sulphate, stannous chloride and alum were added using three mordanting methods: ( pre-simultaneous -post ) mordanting methods and overall fastness properties of dyed mordanted fabrics were assessed.