PL6501 - POLYMER RHEOLOGY (Syllabus) 2013-regulation Anna University
PL6501 - POLYMER RHEOLOGY (Syllabus) 2013-regulation Anna University
PL6501 |
POLYMER RHEOLOGY |
LPTC |
|---|
3003
OBJECTIVES:
To enable the students to understand mechanical behaviour of polymeric materials under applied load for short term and long term Flow behavior of polymer melts and the experimental techniques for measuring the rheological properties.
UNIT I |
3 |
|---|
State of Aggregation and phase states of matter Molecular motion in Polymers Transition relaxation processess in Polymers.
UNIT II |
6 |
|---|
Glass Transition, Theories to determine the glass transition i.e. Dillatometric, Heat capacity, measurement, Thermomechanical, Measurement of modulus of elesticity, effect of Tg on molecular mass, kinetic chain flexbility and chemical constituent, Importance of Tg and Tm, HDT.
UNIT III |
9 |
|---|
Viscoelastic behavior of Polymer solution and melts stress-strain curves for Polymers, creep of Polymeric material, elastic deformation, irrecoverable follow deformation.
Rubber like deformation, Time-temp superposition (WLF Equation) Models of viscollastity such as Maxwell and kelvin model. Types of viscosity, stress relaxation.
UNIT IV |
9 |
|---|
Introduction and Basic concept of Rheology, classification of fluids, Newtonian and non Newtonian fluids, shear stress, shear strain and shear rate, shear modulus, bulk modulus, Zero shear viscosity, Dependance of viscosity with temp, shear stress, shear rate fluid through channel, characteristic parameter during shear deformation.
UNIT V |
9 |
|---|
Methods to determine shear viscocity by capillary Rheometer, cone and plate viscometer, Cup and bob viscometer, Measurement of normal stresses. Theories of viscocities of dilute (De-bye Bueche theory) and conc. Solutions (Grasselley’s entanglement theory), (Entanglement concern)
UNIT VI |
9 |
|---|
Rheology of dilute and concentrated supensions, effect of Rheology during Injection, moulding Extusion: Film extrustion, sheet Extrusion and Blow mouldings of polymers.
Rheometer, Bubble inflation rheometer, compressional rheometers, stress relaxation instruments. Torque rheometers, rotational & sliding surface rheometers and their use in determining processability.
TOTAL : 45 PERIODS
OUTCOMES: Upon completing this course, the students
• Will understand the influence of rheology in polymer properties.
• Will acquire knowledge in handling rheological instruments
• Will attain the knowledge in flow behaviour of polymers.
• Will acquire knowledge in handling rheological instruments
• Will attain the knowledge in flow behaviour of polymers.
TEXT BOOKS:
1. J.A.Brydson, Flow properties of polymer melts, life books, London, 1978.
2. R.J. Crawford, Plastics Engineering, Butterworth - Heinemann, Oxford, 1998
2. R.J. Crawford, Plastics Engineering, Butterworth - Heinemann, Oxford, 1998
REFERENCES
1. P.N.Cogswell, Polymer Melt Rheology, A guide for Industrial Practice, George Godwin
2. Richard C. Progelhof and James L. Throne, Polymer Engineering Principles, Hanser Publishers, New York, 1993.
3. John M. Dealy and Kurt F. Wissburn, Melt rheology and its role in plastics processing, Chapman, London, 1995.
4. R.S. Lenk, Polymer Rheology, Applied Science, London, 1978.
5. J.D. Ferry, Viscoelastic Properties of Polymers, john Wiley & Sons, New York, 1986.
6. Chang Dae Han. Rheology in Polymer Processing, Academic Press, New York, 1976
2. Richard C. Progelhof and James L. Throne, Polymer Engineering Principles, Hanser Publishers, New York, 1993.
3. John M. Dealy and Kurt F. Wissburn, Melt rheology and its role in plastics processing, Chapman, London, 1995.
4. R.S. Lenk, Polymer Rheology, Applied Science, London, 1978.
5. J.D. Ferry, Viscoelastic Properties of Polymers, john Wiley & Sons, New York, 1986.
6. Chang Dae Han. Rheology in Polymer Processing, Academic Press, New York, 1976
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