TY4201 Technology of Textile Coloration Syllabus:

TY4201 Technology of Textile Coloration Syllabus – Anna University PG Syllabus Regulation 2021

OBJECTIVES

 To study about concept of colour vision & the measurement of colour
 To study about the influence of fibre structure on dyeing & various dyeing models
 To give basic idea about Application & importance of CCM

UNIT I COLOUR AND COLOUR VISION

Definition of colour and its classification – Structure and function of the eye – Detail study about rods and cones – Modeling the colour vision process – Tests for defective colour vision. Study about metamerism

UNIT II MODERN MEASUREMENT OF COLOUR

Detail study about colour measuring instruments like Spectro-photometer – Color eye – Derivation of KM equation and its application. Colour difference equations and application

UNIT III COMPUTER COLOUR MATCHING

Derivation the equation for Evaluation of depth and relative depth – Evaluation of fastness test results– Evaluation of whiteness and yellowness–Recipe formulation and correction. Development in CCM. Problem and solution to measure OBA treated materials

UNIT IV THE INFLUENCE OF FIBRE STRUCTURE ON DYEING

Dyeing properties related to the inherent physical structure of the fibre– The relationship between preparation and the physical properties of man-made fibres – The interaction between dyes &fibre forming polymers. Methods to find out nature of bonding in dyes materials. Study about four types of adsorption isotherms

UNIT V DYEING MODELS

Mechanisms of reactions of reactive groups – Kinetics of hydrolysation of reactive groups – Methods to avoid hydrolysation and to get better fixation. Methods to improve dye ability of textile materials such as crafting, cationisation, solvent treatment etc

TOTAL: 45 PERIODS

OUTCOMES

Upon completion of this course the student shall have knowledge on
CO1:Concept of colour and colour vision
CO2:Different colour measuring instruments and equations related to colour theory.
CO3:Concepts of computer colour matching.
CO4:The influence of fibre structure on dyeing process.
CO5:The mechanism and kinetics involved in dyeing process

REFERENCES

1. Shah.H.Sand R.S.Gandhi, ‘Instrumental colour measurements and computer aided colour matching for textiles”, Mahajan book distributors,Ahmedabad,1990
2. Ashish Kumar Chaudry, “Colour Science”. Mahajan book distributors,Ahmedabad,1990
3. Peters.A.TandFreemanH.S “Physico-chemical principles of colour chemistry”,Blackie,1995.
4. AllanJohnson, The Theory of colouration of textiles,SDC,1989.
5. Wyszecki.G., and W.S.Stile,‘Colour science, concept and methods, Quantitative data