What are the different ways of initiating addition polymerization? Describe one of them for polymerising vinyl chloride.
Polymerization can be initiated in three ways:
(i) Free radical polymerization using peroxide as an initiator.
(ii) Cationic polymerization using H+ as an initiator.
(iii) Anionic polymerization using KNH2 as an initiator.
Free radical polymerization : In → In°.
Differentiate between elastomers and fibres on the basis of inter-molecular forces. Give one structural formula of each type of polymers.
Will you prefer to polymerize acrylo-nitrile under anionic or cationic polymerization conditions? Explain your choice.
Differentiate between chain growth and step growth polymerization. Give the structural formula one polymer of each type.
Why is cationic polymerization preferred in case of vinylic monomers containing electron donating groups?
How are polymers classified into different categories on the basis of intermolecular forces? Give one example of a polymer of each of these categories.
