Saturday, June 25, 2011

TT2304 TEXTILE CHEMICAL PROCESSING ANNA UNIVERSITY FIFTH SEMESTER TEXTILE ENGINEERING SYLLABUS

TT2304 TEXTILE CHEMICAL PROCESSING


UNIT I
Wet process sequences for cotton, wool, silk, blended fabrics: Singeing -Yarn singeing
machines. Gas singeing machine for woven and tubular knits - Classification of desizing
methods-Hydrolytic methods and oxidative methods - Enzymatic desizing - Scouring –
Kier boiling - Saponification, Emulsification. Detergency-Lime boil Vs soda boil –Types of
Kier-Wool carbonizing- Degumming of silk.
UNIT II
Bleaching of cotton: Hypochlorite-Hydrogen Peroxide-Sodium chlorite. Batchwise, Semicontinuous
and Continuous processes. Continuous scouring and bleaching machines,
washing ranges, hydro extractors. Bleaching of viscose/linen, cotton/viscose, and
polyester/cotton blends.
Mercerization: Theory of Processes – Methods-Chemicals-Effects. Yarn mercerizer,
Chain and Chainless Mercerizers, Circular mercerizing machine. Liquid ammonia
treatment-Equipments-Kier-J box-Pad roll, Mangles, Jigger, Winch, Jet and Softflow
machines, Detwisters, Dryers, Stenter and Stretching devices.
UNIT III
Dyeing: Introduction to dyeing of natural and synthetic fibres, fabrics and blends with
various dye classes. Recent developments in dyeing of natural fibres, synthetic fibres
and their blends Problems in dyeing and their solutions Eco-friendly chemicals and
banned dyes.
UNIT IV
Mechanical and economic aspects of fibre, yarn, and fabric Scouring, bleaching and
dyeing machines for woven and knits. Loose stock, bale, hank, package, Jigger, Winch,
HT beam, Jet, Padding mangles and garment dyeing machines.
UNIT V
Color Measurement: Application of Computer Color Matching system to evaluate
strength of dye, shade matching, whiteness / yellowness index. Fastness properties of
dyed products

TEXT BOOKS
1. Trotman, E.R., “Dyeing and Chemical Technology of Textile Fibres”, Charles Griffin and Co. Ltd., London. 1990.
2. Shenai, V.A. “Technology of Bleaching and Mercerzing - Vol. III”, Sevak Publications Chennai, 1991
.
REFERENCES
1. Shenai, V.A., “Fundamentals of Principles of Textile Wet Processing”,
2. Marsh J.T., “Mercerizing”, Chapman and Hall Ltd., London, 1041.
3. Bhagwat R.S “Handbook of Textile Processing”, Color Publication, Mumbai, 1999
4. Shenai, V.A., “Principle and Practice of Dyeing”, Sevak Publisher, Bombay.
5. T.L.Vigo, “Textile Processing and Properties”, Elsevier, New York, 1994.

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