Coming soon
Polymers
To learn the kinetics and mechanism of various polymerization reactions and to expose the students with various processing techniques.
Pre requisite: Basic concepts of polymer science- monomers, repeat units, degree of polymerization;
Classification of polymers, average molecular weight, number-average and weight-average molecular weights; sedimentation and viscosity average molecular weights, polydispersity and molecular weight distribution; practical significance of molecular weight; measurement of molecular weights – end-group, viscosity, light scattering, osmotic and ultra centrifugation methods; analysis and testing of polymers – chemical analysis of polymers, spectroscopic methods, X-ray diffraction study, microscopy.
Morphology and order in crystalline polymers – configuration of polymer chains, crystal structure of polymers, morphology of crystalline polymers, strain - induced morphology, crystallization and melting; polymer structure and physical properties – crystalline melting point Tm (melting point of homogenous series, effect of chain flexibility and other steric factors, entropy and heat of fusion), the glass transition temperature Tg, relation between Tm and Tg, effects of molecular weight, diluents, chemical structure, chain topology; property requirements and polymer utilization.
Pre requisite: Addition and condensation polymerization.
Classification of polymerization mechanism, mechanism of stepwise polymerization, kinetics and statistics of linear stepwise polymerization, poly functional step reaction polymerization, ring-opening polymerization.
Chain (addition) polymerization: mechanism and kinetics based on active centers (free readical, anionic, cationic); effects of temperature and pressure on chain polymerization; coordination polymerization : Ziegler Natta .
Kinetics and mechanism of copolymerization. Polymerization in homogeneous and heterogeneous system.
Plastics, elastomers and fibres, compounding, processing techniques- calendaring, die casting, rotational casting, film casting, injection moulding, blow moulding, extrusion moulding, thermoforming, foaming, reinforcing and fibre spinning.
1. Textbook of Polymer Science, Third Edition; Fred. W. Billmeyer; John Wiley & Sons, Singapore, 2002.
2. Polymer Science, First Edition; V.R. Gowariker, N.V. Viswanathan, Jayadev Sreedhar; New Age International Pvt. Ltd., New Delhi, 2000.
3. Principles of Polymer Science, First Edition; P. Bahadur and N.V. Sastry; Narosa Publishing House, New Delhi, 2003.
