BCT403 Chemical Processing of Textiles I Syllabus — AKTU 2023-24

Syllabus

5 units · 60 lecture hours

Unit1

Unit 1

12 hrs

Preparatory Process: Sequence of preparatory process prior to dyeing for natural & manmade fibre fabrics with special reference to cotton, wool, polyester and blends. Singeing: details of gas singeing process. Desizing: Objects of desizing, Mechanism of desizing. Various methods of industrial desizing: Hydrolytic enzymatic & oxidative method of desizing, Evaluation of efficiency of desizing.

Unit2

Unit 2

12 hrs

Scouring: Object of scouring, Scouring with alkali assisted desizing, eco-friendly scouring process. Inter-relation between desizing and scouring, Study of batch-wise & continuous methods of scouring. Scouring machines for batch process of cotton and blended fabric. Evaluation of efficiency of scouring

Unit3

Unit 3

12 hrs

Bleaching: Objects of bleaching, Introduction to bleaching agents like sodium hypochlorite ,hydrogen peroxide & per-acetic acid, Bleaching of cotton, polyester & its blends, Batch-wise & continuous machinery for bleaching, Bleaching of wool ,silk, Concept of AOX. Bleaching process for compliance of EU norms. Evaluation of efficiency of bleaching. Continuous scouring and bleaching: Pre-treatment Range

Unit4

Unit 4

12 hrs

Mercerization: Introduction & objects of mercerization, Effect of mercerization on structure of cellulose, Machinery used for yarn, woven and knit fabrics, Concept of hot mercerization & liquid ammonia mercerization, mercerization machines: chain mercerization and chainless mercerization. testing methods to evaluate efficiency of mercerization like Barium Activity, Number, Axial Ratio & Luster index.

Unit5

Unit 5

12 hrs

Direct Dyes: Theory of dyeing, dynamic equilibrium, Generalised formula of Direct dyes: Classification of direct dyes; Mechanism of Direct dyes and procedure for application of direct dyes; dye-fibre bond; effect of different process parameters (e.g. temp, time, pH) & role of various additives in dyeing process; fastness properties of direct dyes; industrial after treatments for direct dyes.

Course Objectives5 points

To acquire knowledge of fundamentals of singeing, desizing, scouring, bleaching, mercerisation and direct dyeing.
To identify technological involvement with appropriate techniques in singeing, desizing, scouring, bleaching, mercerisation and dyeing processes.
To formulate and apply technological knowledge in singeing, desizing, scouring, bleaching, mercerisation and dyeing processes in industry.
To make the chemical processes under control in singeing, desizing, scouring, bleaching, mercerisation and dyeing.
To demonstrate knowledge for project work and be helpful to higher studies in the field of singeing, desizing, scouring, bleaching, mercerisation and dyeing.

Course Outcomes (COs)5 outcomes

After completion of the course student will be able to:

CO1Acquire knowledge of fundamentals of singeing, desizing, scouring, bleaching, mercerisation and direct dyeing.
CO2Identify technological involvement with appropriate techniques in singeing, desizing, scouring, bleaching, mercerisation and dyeing processes.
CO3Formulate and apply technological knowledge in singeing, desizing, scouring, bleaching, mercerisation and dyeing processes in industry.
CO4Make the chemical processes under control in singeing, desizing, scouring, bleaching, mercerisation and dyeing.
CO5Demonstrate knowledge for project work and be helpful to higher studies in the field of singeing, desizing, scouring, bleaching, mercerisation and dyeing.

References

Dyeing & Chemical technology of Textile fibres by E.R. Trotman.
Chemical Technology in the Pre-Treatment process of Textile by Dr S. R. Karmakar.
Technology of Bleaching Vol. IV, by Dr. V.A. Shenai.
Technology of Bleaching by J.T Marsh
Chemistry of Dyes and principles of Dyeing by Dr. V.A. Shenai.
Technology of Dyeing by Dr. V.A. Shenai

Official AKTU syllabus

This subject is on page 13, 14 of the original AKTU PDF.

Official AKTU syllabus PDF ↗