Basics of Polymer Chemistry — DU B.Sc (hons) Chemistry Previous Year Question Papers

Q1. (a) Explain the classification of polymer. 5 (b) Explain addition polymerization with an example? 5 (C) What is tacticity? How does it affect the Im Of a polymer? 5 Q2. (a) What is crystallinity of polymer? Differentiate between crystallinity and crystallizability. 5 (b) Describe the end group analysis method for the determination of molecular weight of polymers. 5 (c) Differentiate between thermoplastic and thermosetting polymers with example. 5 Q3. (a) Explain WLF theory to explain the viscosity variation of polymer with temperature.5 (b) How does the texture of polymer change with temperature and intermolecular forces? (c) Explain the importance of polydispersity. 5 Q4. (a) Name any two examples of silicon polymers and discuss their properties. 5 (b) Write a short note on the synthesis and applications of polyaniline. 5 (C) Write the synthesis of Nylon 6,6 and explain its applications. QS. (a) Write short note on: (i) Conducting Polymers (ii) Pluoro polymers 5 (b) What is glass transition temperature (Tg)? Discuss the effect of structure and molecular weight of polymer on glass transition temperature. 5 (c) Write short note on: 5 (i) Crystalline polymer (i) Amorphous polymer Q6. (a) Define functionality of a monomer and write its significance. 5 (b) A polymer sample is composed according to the following mixture of fraction (Mass % and molecular weight of each of the fraction are given): Wait M. Ma and PDI for this polydispersed polymer. 5 (c) Discuss the preparation, properties and application of polyurethanes. 5