TT3353 Syllabus - Structure And Properties Of Textile Fibres - 2021 Regulation Anna University

TT3353 Syllabus - Structure And Properties Of Textile Fibres - 2021 Regulation Anna University

TT3353

 STRUCTURE AND PROPERTIES OF TEXTILE FIBRES

 LTPC
3024

COURSE OBJECTIVES:
The main objective of this course is to enable the students to understand the
• Structure and morphology of textile fibres.
• Structure investigation techniques.
• Physical characteristics textile fibres.

UNIT I

STRUCTURE OF FIBRES

9
Classification of fibres; study of morphological structures of fibers; physical properties of fibres; order and disorder in fibre structure; molecular conformations – planar zig-zag, helical, lamellar, and sperulite conformations

UNIT II

 STRUCTURE INVESTIGATION TECHNIQUES

9
Transmission and Scanning electron microscopes - principle; construction and working; X-ray diffraction techniques – estimation of crystallinity; Infrared radiation and dichroism techniques; chemical element and group identification by transmittance and optical density methods, molecular orientation estimation


UNIT III

 MOISTURE ABSORPTION CHARACTERISTICS

9
Theories of moisture sorption; moisture absorption behaviour of natural and man-made fibres; influence of fibre structure, humidity and temperature on the moisture absorption; conditioning of fibres – mechanism of conditioning and factors influencing conditioning. Moisture diffusion in fibres; heat of sorption – integral and differential, their relation; factors influencing heat of sorption - measurement of heat of sorption

UNIT IV

MECHANICAL PROPERTIES OF FIBRES

9
Tensile characteristics –study of strength, elongation, work of rupture, initial modulus, work factor and yield point – determination of yield point. Stress-strain relations of natural and manmade fibres - influence of fibre structure, humidity and temperature on tensile characteristics. Time effect study of creep phenomena. Elastic recovery and its relation to stress and strain of fibres; mechanical conditioning of fibres and its influence on elastic recovery. Load cycling and extension cycling-their effect on elastic recovery. Introduction about torsional and flexural rigidity of fibers

UNIT V

 OPTICAL, FRICTIONAL AND THERMAL CHARACTERISTICS

9
Reflexion and lustre-objective and subjective methods of measurement - refractive index and its measurement - birefringence, factors influencing birefringence - absorption and dichroism friction – static, limiting and kinetic friction, its measurement, comparison of fibres, directional friction in wool – friction. thermal transitions of fibres - thermal conductivity, thermal expansion and contraction, Tg and Tm; static electricity in textile fibres.

TOTAL: 75 (45 L+30 P)

COURSE OUTCOMES:: Upon completion of the course, students will be able to
Upon completion of this course, the student shall be able to CO1: Explain the structure and properties of fibres CO2: Identify the method of investigation of structure of fibres CO3: Compare and understand moisture absorption behaviour of various fibres CO4: Demonstrate the tensile and elongation properties of fibres CO5: Interpret the optical, thermal and frictional characteristics of fibres CO6: Identify the fibres using, solubility, burning and microscopic test. CO7: Determine the linear density and moisture properties of fibres

TEXT BOOKS:
1. Morton W.E., and Hearle J.W.S.,“Physical Properties of Textile Fibres”, The Textile Institute, Washington D.C., 2008, ISBN978-1-84569-220-95 2. Hearle J.W.S.,Lomas B.,and CookeW.D., “Atlas of Fibre Fracture and Damage to Textiles”,The Textile Institute, 2nd Edition, 1998, ISBN:1855733196

REFERENCES:
1. Meredith R., and Hearle J. W. S., “Physical Methods of Investigation of Textiles”, Wiley Publication, New York, 1989, ISBN: B00JCV6ZWU ISBN-13: 2. MukhopadhyayS. K., “Advances in Fibre Science”, The Textile Institute,1992, ISBN: 1870812379 3. MeredithR.,“MechanicalPropertiesofTextileFibres”,NorthHolland,Amsterdam,1986,ISBN: 1114790699, ISBN-13:9781114790698 4. RaheelM. (ed.)., “Modern Textile Characterization Methods”, Marcel Dekker, 1995, ISBN:0824794737 5. Mukhopadhyay. S. K., “The Structure and Properties of Typical Melt Spun Fibres”, Textile Progress, Vol. 18, No. 4, Textile Institute, 1989, ISBN:1870812115 6. Hearle J.W.S., “Polymers and Their Properties : Fundamentals of Structures and Mechanics Vol1”,EllisHorwood,England,1982,ISBN:047027302X|ISBN13:9780470273029 7. Greaves. P. H., and Saville B.P., “Microscopy of Textile Fibres”, Bios Scientific, U.K., 1995, ISBN: 1872748244 | ISBN-13:9781872748245 8. Seville. B. P., “Physical Testing of Textiles”, Woodhead Publishing, 1999,ISBN: 1855733676 | ISBN-13:9781855733671 9. Hearle J. W. S., and Peters. R. H., “Fibre structure”, Elsevier Ltd, 1963, ISBN: 1483212211 | ISBN-13:9781483212210
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