# What is the difference between condensation polymerization and addition polymerization?

Apr 8, 2018

Consider the following explanation.

#### Explanation:

$A \mathrm{dd} i t i o n$ $P o l y m e r i z a t i o n$

Addition Polymerization involves polymers which are formed by the combination of alkene monomers to produce a single huge molecule only.

Note:Nothing is eliminated, the monomers simply add up to each other.

Such reactions are catalyzed typically by peroxides and acids at a pressure of about $1000 a t m$ where the temperature reaches to about ${2000}^{o} C$.
Typical examples are the formation of Polyethylene from Ethylene or the formation of PolyVinyl Chloride (PVC) from Vinyl Chloride.

The reaction in the case of polyethylene comes out to be:
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$C o n \mathrm{de} n s a t i o n$ $P o l y m e r i z a t i o n$

Condensation Polymerization involves polymers which are formed by the combination of monomers with the elimination of simple molecules like ${H}_{2} O$ or $N {H}_{3}$.

Typical examples of such polymers are Polyesters and Polyamides.
Nylon,6-6 is the most common polyamide which is obtained by heating hexamethylene diamine with adipic acid under ${N}_{2}$ at ${2000}^{o} C$.

The reaction comes out to be:
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