Question

Distinguish between additon polymers and ondensation polymers. Classify the following into Addition and condensation polymers: 

(i) Polythene

(ii) PTFE  

(iii) Polybutadiene 

(iv) Bakelite 

Answer 1

(i) Polythene	CH2=CH2	Houseware, containers, bottles toys, films, packing material etc.
(ii) PTFE	CF2 =CF2	Non-stick utensils, gaskets, pump packings, valves, seals and non-lubricated bearings
(iii) Polybutadiene	CH2 = CH - CH = CH2	Polybutadiene has a high resistance to wear and is used especially in the manufacture of tires, which consumes about 70% of the production.
(iv) Bakelite		For making gears, protective coating and electrical fittings