Write the names and structures of the ...

NCERT Class XII Chemistry
Chapter - Polymers
Questions with Solutions

Question : 17 of 26

Marks: +1, -0

Write the names and structures of the monomers of the following polymers :

(i) Buna-S

(ii) Buna-N

(iii) Dacron

(iv) Neoprene.

Solution:

Polymers	Monomers
Polymers	Name	Structure
Buna-S	(i) Styrene (ii) Buta-1, 3-diene	$\mathrm{C_6H_5CH=CH_2}$ $\mathrm{CH_2=CHCH=CH_2}$
Buna-N	(i) Acrylonitrile (ii) Buta-1, 3-diene	$\mathrm{CH_2=CH-CN}$ $\mathrm{CH_2=CHCH=CH_2}$
Dacron	(i) Ethylene glycol (ii) Terephthalic acid	$\mathrm{HOCH_2=CH_2OH}$
Neoprene	Chloroprene	$\mathrm{CH_2=}\overset{\mathrm{Cl}}{\overset{\vert}{\mathrm{C}}}\mathrm{-CH=CH_2}$

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