Essential Chemistry for IGCSE - Polymers (Section 3 - No. 38)
What distinguishes addition polymerization from condensation polymerization?
Condensation requires a catalyst; addition does not.
Addition produces a small molecule by-product; condensation does not.
Addition involves only one type of monomer; condensation can use multiple monomers.
Addition does not produce any other products. Condensation eliminates a molecule.
Explanation
Addition polymerizations do not release any byproducts.