Chemistry

Difference Between Addition and Condensation Polymerization

The Basic Difference Between Addition and Condensation Polymerization is that Addition Polymerization involves only one monomer and does not lead to a loss in smaller molecules e.g PVC and Teflon while Condensation Polymerization involves two different kinds of monomers and lead to loss of simple molecules like HCl etc. for example nylon, bakelite.

Polymerization is the process of joining a large number of small molecules to make very large molecules.

Monomers are the building blocks of polymers. Depending on the nature of the chemical reaction involved in the formation of a polymer, there are two types of polymerization reactions: addition polymerization and condensation polymerization.

Addition polymerization produces addition polymers by adding olefin monomers without forming any by-products. In contrast, condensation polymerization produces condensation polymers by intermolecular condensation of two different monomers, with the formation of small molecules, such as HCl, water, ammonia, etc., as by-products.

This is the main difference between the addition polymerization and condensation polymerization. In addition to this main difference, there are many other differences between these two polymerization reactions.

What is Addition polymerization?

Additional polymerization is the addition of one monomer to another monomer to form long-chain polymers. This process does not produce any by-products. 

Therefore, the molecular weight of the polymer will be an integral multiple of the molecular mass of the monomer. The monomers involved in these reactions must be unsaturated (double or triple bonds must be present). 

During the reaction, the unsaturated bonds open and form covalent bonds with adjacent monomer molecules to form long-chain polymers. 

There are three types of mechanisms in addition to polymerization, namely; free-radical mechanism, ionic mechanism, coordination mechanism. 

The polymers produced by the addition polymerization process are called addition polymers. Examples of addition polymers include polyvinyl chloride or PVC, poly (propylene), poly (tetrafluoroethylene) or TEFLON, etc.

What is Addition polymerization?

What is condensation polymerization

Condensation polymerization is the process of intermolecular condensation of two different monomers to form a large chain of polymer molecules. In this process, the binding of each monomer molecule will result in a simple product, such as HCl, ammonia, water, etc. 

Therefore, the molecular weight of the polymer will be the product of the degree of polymerization and the molecular weight of the repeating unit. 

Polymers resulting from condensation polymerization are called condensation polymers. Bakelite, nylon, and polyester are some common examples of condensation polymers.

What is condensation polymerization

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