91Ó°ÊÓ

Chain-growth polymerization phenomenon takes place by the addition of smaller polymer chains to form a giant polymer molecule.

In this phenomenon, the active site of the chemical reaction is functional groups. During the process, double bond removal might occur which leads to chain building.

1,1-dicholorethene has double bonds, and when chain-growth polymerization of this compound is carried out, the double bonds become a single bond, and many units of the monomers gets combined.

The chlorine atoms remain the same during polymerization.

It is shown below:

Chain growth polymerization of 1,1-dichloroethene

1-methoxy-4-vinylbenzene also has double bonds.When chain-growth polymerization of this compound is carried out, the double bonds present outside the benzene ring becomes a single bond and many units of the monomers gets joined.

The benzene ring and the substituent attached to it remain the same during polymerization.

It is shown below:

Chain growth polymerization of 1-methoxy-4-vinylbenzene

Methoxyethene also consists of double bonds. When chain-growth polymerization of this compound is carried out, the double bonds becomes a single bond and many units of the monomers gets joined.

Methoxy group remain the same during polymerization.

It is shown below:

Chain growth polymerization of methoxyethene

Methyl acrylate has double bond. When chain-growth polymerization of this compound is carried out, the double bonds become a single bond and many units of the monomers gets combined.

Methyl group and carboxylic acid group remains the same during polymerization.

It is shown below:

Chain growth polymerization of methyl acrylate