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TT 2251 CHEMISTRY FOR TEXTILES SYLLABUS | ANNA UNIVERSITY BTECH TEXTILE TECHNOLOGY 4TH SEM SYLLABUS REGULATION 2008 2011 2012-2013

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TT 2251 CHEMISTRY FOR TEXTILES SYLLABUS | ANNA UNIVERSITY BTECH TEXTILE TECHNOLOGY 4TH SEM SYLLABUS REGULATION 2008 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY FOURTH SEMESTER B TECH TEXTILE TECHNOLOGY DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS,EXAM PORTIONS,QUESTION BANK,PREVIOUS YEAR QUESTION PAPERS,MODEL QUESTION PAPERS, CLASS NOTES, IMPORTANT 2 MARKS, 8 MARKS, 16 MARKS TOPICS. IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011 2012-2013 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI, TIRUNELVELI,COIMBATORE), 2008 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009

TT 2251 CHEMISTRY FOR TEXTILES L T P C
3 0 0 3
AIM
To impart a sound knowledge of theoretical aspects of Carbohydrates, Aminoacids and
Proteins, Oils, Fats and Waxes, Bleaching agents, Dyes.
OBJECTIVES
Students should be conversant with:
Structure and properties of cellulose
 Chemical composition, properties (chemical and physical) of different fibres
 Methods of Bleaching and Dyeing techniques
UNIT I CARBOHYDRATES 9
Introduction, mono- and di-saccharides – important reactions. Polysaccharides-Starch
and Cellulose- Structure and properties. Reactions of cellulose. Derivatives of cellulosecarboxy-
methyl cellulose, secondary cellulose acetate and cellulose triacetate. Lignin –
structure and properties. Delignification of lignocelluloses- chemistry and mechanism.
Preparation, physical and chemical properties of regenerated cellulose and its textile
uses.
UNIT II AMINOACIDS AND PROTEINS, OILS, FATS AND WAXES 9
Classification of proteins, test for proteins, denaturation. Wool and silk - chemical
composition, properties (chemical and physical), structural aspects and application.
Analysis of oils and fats- Classification of waxes. Fatty, waxy/gummy and protein
materials present in natural fibres (cotton, silk, wool etc) and their removal.
UNIT III BLEACHING AGENTS 9
Oxidative (chlorite, hypochlorite and hydrogen peroxide) and reductive (borohy-drides,
sulphites, hydrosulphites etc) bleaching agents and their mechanism of action in textile
bleaching.
Heterocyclic compounds
Furan, thiophene, pyrrole, pyridine and indole- their important derivatives.
UNIT IV DYES 9
Colour and constitution. Light absorption properties of dyes. Beer-Lambertz law. Dye
estimation by spectrophotometer.
Classification of dyes and intermediates viz, azines, oxazines, thiazine, acridine,
thiazole, eqinoline, cyanide dyes, diphenyl and triphenyl methane dyes. Structure and
synthesis of important azo dyes (methyl orange, congo red and methyl red), diphenyl
methane dyes (malachite green, para rosaniline) and anthraquinone dyes (alizarin).
Indigoid, thioindigoid, solubilized vat dyes, reducing agents in vat dyeing and their
reduction potentials, sulphur color, phthalocynanine and phthalin dyes, reactive gyes
and mordant dyes. Disperse dyeing and its mechanism. Cationic dyestuff. Natural dyes
- source, extraction and the structure of the dye component. Fluorescent brightening
agents- their chemistry, preparation and uses.
UNIT V THEORY OF DYEING 9
Polymer-dye interactions. Substantivity and affinity. Kinetics and thermodynamics of
dyeing. Derivation of affinity equation. Various adsorption isotherms in dyeing and their
thermodynamic derivations. Dye diffusion (Ficks first and second laws), equilibrium
adsorption, partition coefficient, time of half-dyeing, dyeability and dye diffusion
temperature. Derivation of William Landed Ferry (WLF) equation and its significance.
Free volume and solubility parameter concepts in dyeing.
TOTAL : 45 PERIODS
32
TEXT BOOKS
1. Introduction to chemistry of dyestuffs, V.A.Shenai, Sevak Publications, Mumbai,
1995.
2. Textile chemistry, R.H.Peters, Vol. III, The physical chemistry of dyeing, Elsevier,
1975.
REFERENCES
1. Bahl, B.S and Arun Bahl, Advanced organic chemistry, Sultanchand and Sons, New
Delhi, 1994.
2. The chemistry of synthetic dyes, vol.I and II, Academic press, London, 1971.
3. The theory of colouration of textiles, eds.; C.L.Bird and W.S.Boston Dyers company
publications trust, England, 1975
4. Dyeing and chemical technology of textile fibres, Trotman E.R, Edward Arnold Kent,
England.
5. Synthetic organic chemistry, Agarwal O.P, Fifth edition, Goel Publishing house,
Meerut, 1981.

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