POLYMERS AND THE ENVIRONMENT

Polymers are natural or man-made molecules, frequently called macromolecules. They are composed of smaller units, monomers, which have reacted together to give a long chain, rather like a string of beads. In the simplest polymers, the monomers are identical and the polymer is named by prefixing ‘poly’ to the name of the monomer from which it is derived. Thus the polymer from ethylene is poly(ethylene), although in common usage the brackets are omitted. The monomers that constitute a polymer may be the same in which case they are called homopolymers or they may contain more than one monomer in which case they are copolymers. Additional monomers in a polymer may be randomly copolymerised to give random copolymers or may be polymerised in alternating blocks of identical monomers forming block copolymers.

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