Answer:
Polymers are large molecules with a chain structure that can be linear, branched, and cross-linked. Polymer chains are mainly composed of covalently bonded atoms.
Explanation:
Polymers can be synthesized using reactants of petrochemical or renewable origin. Polymers can be synthesized in two methods, by step-growth and chain polymerization. Both ways of polymerization are random processes during which chains of different lengths are formed.
The basis of step-growth polymerization is the condensation reaction.
