Preparation of Textiles for Coloration detailed syllabus for Textile Chemistry (TC) for 2021 regulation curriculum has been taken from the Anna University official website and presented for the TC students. For course code, course name, number of credits for a course and other scheme related information, do visit full semester subjects post given below.
For Textile Chemistry 3rd Sem scheme and its subjects, do visit TC 3rd Sem 2021 regulation scheme. The detailed syllabus of preparation of textiles for coloration is as follows.
Course Objectives:
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Unit I
SINGEING & DESIZING 9 Impurities present in different fibres, Inspection of grey goods and lot preparation. Shearing and Cropping Singeing of cotton and blended fabrics. Yarn singeing – Singeing of tubular knitted fabrics. Tightrope, Slack rope washing. Acid desizing and its limitations, enzyme desizing – Typical recipe for desizing of different materials – different desizing methods. Open width washing machine. Degumming of silks using soap, soap and soda ash, acids, amines and enzymes.
Unit II
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Unit III
BLEACHING 9 Principles of Bleaching: Importance of whiteness and whiteness retention – Bleaching mechanism of Hydrogen Peroxide, Hypo chlorites and Sodium chlorite – Parameters involved in bleaching action – Merits and Demerits of each bleaching agent – bleaching in rope form bleaching in Kier, Jumbo Jigger – Continuous \scouring and Bleaching of cotton goods in open width and rope form using H2O2 – Yarn Scouring and Bleaching using Cabinet hank dyeing machine. Bleaching of p/c blend in open width form by Pad roll and continuous methods using Hydrogen Peroxide and Sodium chlorite, bleaching of Jute – Knitted fabric bleaching on winches, soft flow – The concept of full bleaching -Mechanism of Whitening effect. Blueing agents and its use. Combined Bleaching & whitening. Typical recipe for bleaching of different fibres.
Unit IV
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Unit V
DEVELOPMENTS 9 Developments in grey preparation – combined processing enzymatic scouring & bleaching, cold bleaching; prograde process (liquid ammonia mercerization) Developments in desizing, Scouring, Bleaching and mercerizing, plasma based preparation, ozone bleaching. Milling, Grabbing and potting
Course Outcomes:
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Text Books:
- Trotman, E.R., Textile Scouring and Bleaching, Charless Griffins, Com. Ltd., London 1990.
- Shenai V.A., Technology of Bleaching and Mercerizing, Sevak Publications, Wadala, Chennai, 1991.
Reference Books:
- Nalankilli.G, Edwin Sundar.A, Chemical Preparatory Processes for Textiles, NCUTE Publications, New Delhi, 2002
- Karmakar, S.R., Chemical Technology in the Pre-Treatment Processes of Textiles. Elsevier Science, 1999
- Chakraborty, J.N, Fundamentals and Practices in colouration of textiles, Woodhead Publishing India, 2009, ISBN – 13: 978-81-908001-4-3.
- Bleaching & Mercerizing – BTRA Silver Jubilee Monograph series
- Technology of Mercerizing by J.T. Marsh
For detailed syllabus of all other subjects of Textile Chemistry, 2021 regulation curriculum do visit TC 3rd Sem subject syllabuses for 2021 regulation.
For all Textile Chemistry results, visit Anna University TC all semester results direct link.