Importance of Fixing Agent on the Color Fastness of Reactive Dyestuffs Originated from Various Dye Manufacturers

Sumon Mazumder,
Daffodil International University
Md. Mahbubul Haque
Daffodil International University


Reactive dyes are the dominant choice of colorants to produce colouring effect on cotton goods for some technical advantages. Reactive dyes have a great usage due to having a wide color range and a greater color fastness rating. Most of the wet processing industries are using reactive dyes on textiles for coloration purposes. Reactive dyes are the only class of dyes which make co-valent bond with the fibre molecules, so the colour fastness characteristics become greater. After treatment is carried out in reactive dyeing to remove the weakly bonded unfix dyes from the fibre substrate. However, fixing agent may be induced after reactive dyeing to improve the stability of previously formed co-valent bond between dye and fibre molecules. The aim of this paper is to study the effects of fixing agent on cotton fabric dyed with reactive dye. For the determination of these effects, Colour fastness properties and colour difference values have been measured in case of dyed cotton material before and after using fixing agent. 

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