Chemical Polymer Technology
Polymerization is the process of combination of many small biochemical molecules known as monomers into a covalently bonded chain. During the polymerization process, few chemical groups may be lost from each monomer. Monomers are terephthalic acid, ethylene glycol Laboratory synthetic method are step-growth polymerization and chain-growth polymerization. The essential variation between the two is that in chain growth polymerization, monomers are added to the chain one at a time only, such as in polyethylene, but in step-growth polymerization chains of monomers may combine with one another directly.