Write any two difference between addition and condensation polymerisation.
Addition polymerisation
| Condensation polymerisation
|
Different monomers add to form a polymer with same molecular formula of the repeating structural unit as that of starting monomer.
| A large number of monomers combine with the loss of simple molecules (water, ammonia, HCl, alcohol) to form a polymer having molecular formula of the repeating unit different than starting monomers.
|
No molecule is eliminated during polymerisation
| Small molecules like water, ammonia, HCl or alcohol are eliminated during polymerisation.
|
Usually one monomer is involved.
| Two monomers are involved.
|
Usually unsaturated compounds are monomers.
| Usually monomers contain two functional groups.
|