(a) Write one example each of
(i) Thermoplastic polymer
(ii) Elastomers
(b) Arrange the following polymers in the increasing order of their intermolecular forces :
Polythene, Nylon-6,6, Buna-S
(c) Which factor provides crystalline nature to a polymer like Nylon?
(a) (i) Polythene, Polystyrene
(ii) Neoprene
(b) Buna-S < Polyethene < Nylon-6,6
(c) Strong intermolecular forces such as Hydrogen bonding are responsible for imparting crystalline nature,