Question

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

A Buna-$S$

B Buna-$N$

C Dacron

D Neoprene

Answer 1

$\text{A. Names and structures of the monomers}$

Buna-$S$ is formed from a mixture of buta-$1$,$3$-diene and styrene.

Polymerisation reaction of Buna-$S$ shown below-


Name and structure of monomers are as given below

$\left(i\right)$


$\left(ii\right)$

$\text{B. Names and structures of the monomers}$

Buna-$N$ is s obtained by the copolymerisation of buta–$1$, $3$–diene and acrylonitrile in the presence of a peroxide catalyst

Polymerisation reaction of Buna-$N$ shown below-



$\text{Final answer:}$

Name and structure of monomers are as given below

$\left(i\right)$


$\left(ii\right)$



$\text{C. Names and structures of the monomers}$

Dacron or Terylene is synthesized by repeating the monomeric unit of ethylene glycol and terephthalic acid via condensation polymerisation process.

Polymerisation reaction of Dacron or Terylene shown below-



$\text{Final answer:}$

Name and structure of monomers are as given below

$\left(i\right)$


$\left(ii\right)$


$\text{D. Names and structures of the monomers}$

Synthetic rubber (Neoprene) is synthesized by repeating the monomeric unit of chloroprene or $2$-chloro-$1$,$3$-butadiene.

Polymerisation reaction of Synthetic rubber (Neoprene) is shown below-



$\text{Final answer:}$

Name and structure of monomers are as given below