A polymer is a large molecule composed of repeating structural units, typically connected by covalent chemical bonds.
Polymers are prevalent materials in manufacturing due to their diverse range of physical properties, which can be tailored to specific applications by altering molecular structure or by adding various additives. They are used extensively in industrial processes, including the manufacturing of plastics, rubber, and fibers for textiles, due to their versatility, strength, and resistance to chemicals and wear.
Polyethylene, a polymer with the chemical formula (C2H4)n, is widely used with densities ranging from 0.910 to 0.970 g/cm³.
It is commonly employed in the production of plastic films, containers, and pipings due to its high ductility and low cost.
Polyvinyl chloride (PVC), a polymer made of the repeating unit CH2-CHCl, is noted for its rigidity and chemical resistance.
PVC is often utilized in the making of pipes, cable insulation, and vinyl records, favored for its durability and fire retardant properties.