addition polymer

An addition polymer is a polymer formed without the creation of a by-product. This process is also known as addition polymerization. In addition polymerization, monomers react to form a polymer, and no other molecules are produced. This is distinct from condensation polymerization, where a simple compound, often water, is eliminated during the process. Many common thermoplastic materials, such as polyethylene and polypropylene, are addition polymers. Addition polymerization is a type of chain-growth polymerization, where monomer molecules are added successively to the reactive ends of a growing polymer chain. This mechanism is typically used for monomers containing carbon-carbon double bonds or certain cyclic monomers.1234