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Dyestuff | Classification of Dyestuffs

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Zahirul Islam BUTEX

Zahirul Islam BUTEX

Co-admin , Admin & Author at Textile Study Center
Student of Bangladesh University of Textiles Admin at textilestudycenter.com Admin at more.textilestudycenter.com
Zahirul Islam BUTEX
Zahirul Islam BUTEX

Latest posts by Zahirul Islam BUTEX (see all)

Dyestuff:

Dyestuffs are organic and inorganic substances which consists of chromophore groups, can change the physical and chemical properties of any substance , can absorb light and reflect lights to show color. They are unsaturated complex compound.

 

Characteristics of dyestuff :

  1. It must contain chromophore group
  2. Chromophore group can be different types like -NO2,-NH2,-CO-,-N=O.
  3. It must make dilute solution when it mixed with H2O but it can also insoluble too.
  4. Dyestuff must penetrate into the fibre .
  5. It must have stability and fastness property.


Criteria for choosing a Suitable Dyestuff :

It must be –

  1. Cheap
  2. Non-toxic
  3. Compatible with other chemicals and dyes
  4. Better color fastness
  5. Better stability
  6. Substantivity
  7. Better brightness
  8. Good levelness on the materials

Exhaustion of dyestuffs to fibre :

  1. Moving of dyestuffs from dyebath to the surface of the fibre
  2. Absorption of dyestuffs into the surface of the fibre.
  3. Diffusion of the dyestuffs into the center of the fibre.

Classification of dyes :

  1. According to application
  2. According to Common Parent Structure.

Classification According to Application:

  1. Direct Dye
  2. Basic Dye
  3. Acid Dye
  4. Sulfur Dye
  5. Vat Dye
  6. Aniline Black
  7. Reactive Dye
  8. Azoic Dye
  9. Disperse Dye
  10. Metal Complex Dye
  11. Mordant Dye

Classification According to Common Parent Structure :

  1. Nitro ( -NO2 ) Dye
  2. Nitroso ( -NO- ) Dye
  3. Azo ( -N=N- ) Dye
  4. Azine Dye
  5. Indigoid Dye
  6. Sulphur Dye
  7. Stilbene Dye
  8. Xanthene Dye
  9. Quinoline Dye
  10. Oxazine Dye
  11. Tartiary Methane Dye
  12. Methine Dye
  13. Indamine Dye
  14. Anthra Quinine Dye
  15. Lactone Dye
  16. Thiazole Dye
  17. Acridine Dye

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Zahirul Islam BUTEX

Zahirul Islam BUTEX

Co-admin , Admin & Author at Textile Study Center
Student of Bangladesh University of Textiles Admin at textilestudycenter.com Admin at more.textilestudycenter.com
Zahirul Islam BUTEX
Zahirul Islam BUTEX

Latest posts by Zahirul Islam BUTEX (see all)

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