Problem 15
Discuss the main purpose of vulcanisation of rubber.
Problem 16
What are the monomeric repeating units of Nylon-6 and Nylon-6,6?
Problem 17
Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) Buna-N (iii) Dacron (iv) Neoprene
Problem 19
How is dacron obtained from ethylene glycol and terephthalic acid?
Problem 20
What is a biodegradable polymer ? Give an example of a biodegradable aliphatic polyester.
