Short Answer TypeDifferentiate between elastomers and fibres on the basis of inter-molecular forces. Give one structural formula of each type of polymers.
| Elastomers | Fibres |
| In these elastomeric polymers, the polymer chain are held together by the weakest intermolecular forces. Thesse weak binding forces permit the polymer to the strecthed. For example Buna -S neoprene etc. | In these polymers, the chain are held together by the strong intermolecular forces like hydrogen bonding. For example Nylon6,6), polyesters, etc. |
Differentiate between chain growth and step growth polymerization. Give the structural formula one polymer of each type.
How are polymers classified into different categories on the basis of intermolecular forces? Give one example of a polymer of each of these categories.
What are elastomers? Write the chemical equation to represent the preparation of Buna-S.
What are the different ways of initiating addition polymerization? Describe one of them for polymerising vinyl chloride.
Long Answer TypeWhy is cationic polymerization preferred in case of vinylic monomers containing electron donating groups?
Short Answer TypeWill you prefer to polymerize acrylo-nitrile under anionic or cationic polymerization conditions? Explain your choice.
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