Difference between addition and condensation polymer
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The process of joining small molecules to form a large molecule is known as polymerization. The building blocks of polymers are monomers. Based on the chemical reaction involved, polymerisation is divided into two groups known as addition polymerization and condensation polymerization. Addition polymerization is the process of repeated addition of monomers that posses double or triple bonds to formpolymers. A condensation polymerization is a process that involves repeated condensation reactions between two different bi-functional or tri-functional monomers. Give below in a tabular column is the difference between addition and condensation polymerization.
Addition PolymerizationCondensation PolymerizationMonomers must have either a double bond or triple bondMonomers must have two similar or different functional groupsProduces no by-productsBy-products such as ammonia, water and HCl are producedAddition of monomers results in polymersCondensation of monomers result in polymersThe molecular weight of the resultant polymers is a multiple of monomer’s molecular weightThe molecular weight of the resultant polymer is not a multiple of monomer’s molecular weightLewis acids or bases, radical initiators are catalysts in addition polymerizationThe catalysts in condensation polymerization are catalysts in condensation polymerization.Common examples of addition polymerization are PVC, polyethene, Teflon etc.Common examples of condensation polymerization are nylon, bakelite, silicon, etc.
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