How are polymers classified, Chemical Engineering

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1. a) How are Polymers classified?

   b) Define polymerization. Differentiate addition and condensation polymerization.

2. a) Explain the free radical mechanism of addition polymerization taking ethylene as a  monomer.

    b) Give the synthesis and applications of Teflon.

3. a)Differentiate between thermoplastics and thermosetting plastics.

    b)What is glass transition temperature?Discuss the following factors affecting GTT

        i) Flexibility ii) Intermolecular forces.

4. a) Explain the manufacture and applications of the following high polymers:

       i)Polymethylmethacrylates (plexi glass) ii) polyurethanes.

   b) What are elastomers? Mention the advantages of synthetic rubber over natural rubber.

5. a) What are the deficiencies of natural rubber? What is vulcanization of rubber.

    b) Explain the manufacture of Silicone rubber. Mention their applications.

 

 


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