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  4. Which class of polymer is Buna-S?

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Q. Which class of polymer is Buna-S?

NTA AbhyasNTA Abhyas 2020Polymers

Solution:

The mode of polymerisation is classified into:

I. Addition polymers: Polymers are formed by the repeated addition of monomers with double and triple bonds. It is further classified into,

a. Homopolymers:Polymers formed by the polymerisation of a single monomeric species. Examples – Polythene, Polystyrene.

b. Co-polymers:Polymers formed by addition polymerisation of two different monomers. Examples – Buna-S, Buna –N.

II. Condensation polymers: Polymers formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units with elimination of simple molecules. Examples Nylon 6, 6, Nylon 6.