AKTU Structural Properties of Fibres (BCT602) Syllabus PDF – B.Tech 3rd Year

Course Objectives

To learn the importance of morphological structure on various electrical, optical, frictional and mechanical properties and moisture absorption behaviour of textile materials. Also, to get an understanding of the concept of various thermal transitions occurring in fibres at molecular level and their characterization techniques.

Amorphous and crystalline phases, molecular chain length, Glass Transition, Plasticization, Crystallization, Melting, factors affecting Tg & Tm, Role of molecular entanglement on fibre formation.

Differential heat of sorption, integral heat of sorption, Moisture absorption, effect of hydrophilic groups, moisture absorption in crystalline and non crystalline region, directly and indirectly attached water, creasing behaviour in textiles.

Basic definitions related to mechanical properties of textiles (tenacity elongation, modulus, work of rupture, Elastic recovery), Explanation of load-elongation and stress-strain curves related to textile fires, Relation between structure and mechanical properties of fibres, time effects (Primary and secondary creep).

Thermal behaviour of textile fibres by DSC, TGA, Thermal Mechanical Analysis, Density Gradient Column, Preparation of density gradient column.

Optical properties of fibres, Birefringence behaviour, dielectric properties, fibre friction, fibre friction measurement and static charge measurement.

Reference Books

1. Manufactured fibre technology by V.B. Gupta, V.K. Kothari
2. Physical properties of fibre by J.W.S. Hearle
3. Textile fibres by ATIRA
4. Principles of Textile Testing by J. E. Booth
5. Physical Testing of Textiles by Saville

Course Outcomes

After completion of this course, students will be able to:

1. Understand the importance of crystalline region, amorphous region, molecular chain entanglements etc. with respect to the morphological development of textile fibres.
2. Judge the role of morphological structure in moisture absorption behaviour of textile materials.
3. Appreciate the importance of morphological structure in development of mechanical properties in textile materials.
4. Understand the principles involved in characterization of various electrical, optical and frictional properties of fibres.
5. Explain the working principle of various sophisticated testing instruments such as DSC, TGA, DGC, DMA etc.