Textile Colouration

Paper Code: 
MTX-222
Credits: 
3
Contact Hours: 
45.00
Max. Marks: 
100.00
Objective: 
  1. To understand concept of design as related to fabric through dyeing.
  2. To enhance awareness and appreciation of art and aesthetics through dyeing
     
9.00
Unit I: 
  • Introduction to Dyeing: Definition, theory of dyeing, dyeing auxiliaries, classification of dyes.
  • Dyeing Equipments: General principles of functions of different machines used in dyeing including package dyeing machine, jigger, winch, jet dyeing machine, thermo soling unit stenter- construction, schematic diagram & function.
     
10.00
Unit II: 
  • Direct and Reactive Colours: General properties, classification, dyeing mechanism, general method of application, after-treatment
  • Cationic/basic colours: General properties, classification, dyeing mechanism, general method of application, application on cellulosic materials including necessity of mordanting , different types of mordants, after-treatment

 

10.00
Unit III: 
  • Azoic colours: General properties, dyeing mechanism, general properties of naphthols and bases, their classification, general method of application-preparation of naphthol and base, after-treatment, reasons,
  • Sulphur colours, Vat colours and  Solubilised Vat colours : General properties, classification, dyeing mechanism, general method of application-preparation of stock solution, after-treatment, special problems associated with vat dyes, prevention/correction.
     
8.00
Unit IV: 
  • Disperse colours: General properties, classification, dyeing mechanism, their chemical nature, general method of application, after treatment, role of bath additives, concept of rapid dyeing.
  • Acid and Acid mordant colours: General properties, classification criteria, i.e., according to state in solution and according to method of dyeing, dyeing mechanism, general method of application, after-treatment, role of bath additives
     
8.00
Unit V: 
  • Metal complex colours: General properties, classification, dyeing mechanism, general method of application, after-treatment
  • Colouration of blends: Dyeing of polyester/cellulose, polyester/wool, wool/polyamide, wool/acrylic blends
  • Introduction to banned dyes
     
Essential Readings: 
  1. Trotman, E.R., Dyeing and Chemical Technology of Textile Fibres, Charles Griffino Company Ltd., London, 1975.
  2. Shenai, V.A., An Introduction to the Chemistry of Dyestuffs, Sevak Prakashan, 1991.
  3. Shenai, V.A., Technology of Textile Processing, Vol.-IX, Sevak Publication, 1984.
  4. Cook, J. Gordon, Hand Book of Textile Fibres: Man-Made Fibres, Merrow Publishing Co. Ltd., England, 2005.
  5. Marsh, J.T., An Introduction to Textile Finishing, B.I., Publications, 1979.
     
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