Unit 15 Polymers (Intext Questions-3)-Deleted
Intext Questions
15.4 Explain the difference between Buna-N and Buna-S.
Answer Buna - $\mathrm{N}$ is a copolymer of 1,3 -butadiene and acrylonitrile. Buna - $\mathrm{S}$ is a copolymer of 1 , 3-butadiene and styrene.Show Answer
(i) Nylon 6, 6, Buna-S, Polythene.
(ii) Nylon 6, Neoprene, Polyvinyl chloride.
Show Answer
Answer
Different types of polymers have different intermolecular forces of attraction. Elastomers or rubbers have the weakest while fibres have the strongest intermolecular forces of attraction. Plastics have intermediate intermolecular forces of attraction. Hence, the increasing order of the intermolecular forces of the given polymers is as follows:
(i) Buna - S < polythene < Nylon 6, 6
(ii) Neoprene < polyvinyl chloride < Nylon 6
