Question

Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) Buna-N (iii) Dacron (iv) Neoprene

Answer 1

(i) Butane-1,3-diene and Styrene (in presence of Sodium)

(ii)Butane-1,3-diene and acrylo nitrile (in presence of Sodium)

(iii)Ethylene Glycol and Terephthalic acid

(iv)Chloroprene (in presence of O2 or peroxide)

Answer 2

Buna-S has two such as 1, 3-butadiene which as CH2 = CH – CH = CH2 and Styrene which has C6H5CH = CH2.

Same as the Buna-N two option such as 1, 3-butadiene which as CH2 = CH – CH = CH2 and crylonitrile has formula of CH2 = CH – CN.

The Neoprene has Chloroprene Monomer which has formula of  .

Here the Dacron has Ethylene glycol monomer with chemical formula of HOH2C –CH2OH