Name: Molecular Masses of Polymers
Uploaded: 2019-07-19
Duration: 4 min 40 s
Description: We already know how to calculate the molecular mass of compounds. In this video, we will discuss the molecular masses of polymers and the methods to determin...

Question

How can you differentiate between addition and condensation polymerization?

Accepted Answer

Addition polymerization Condensation polymerization

In addition polymerization, the molecules of the same or different monomers simply add on to one another leading to the formation of a macromolecules without elimination of small molecules like $H_{2} O, {NH}_{3} etc .$ In condensation polymerisation, two or more bifunctional trifunctional molecules undergo a series of independent condensation reactions usually with the elimination of simple molecules like water, alcohol, ammonia, carbon dioxide and hydrogen chloride to form a macromolecule.

Addition polymerization generally occurs among molecules containing double and triple bonds. For example, nylon-6,6 is a condensation polymer of hexamethylenediamine and adipic acid formed by elimination of water molecules.

For example, formation of polythene from ethene and neoprene from chloroprene, etc. The formation of terylene or dacron by the interaction of ethylene glycol and terephthalic acid is an example of this type of polymerisation.

It is also termed as chain growth polymerisation. It is also termed as step growth polymerisation.

How can you differentiate between addition and condensation polymerization?

Important Questions on Polymers

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