Basic Polymer Testing Information

The term 'plastics' describes a wide range of synthetic, or mostly synthetic, solid materials with high molecular mass that can be shaped, molded or otherwise given form while soft and then hardened. While technically polymers in nature, plastics typically contain other substances, also known as additives, that improve material performance, reduce manufacturing costs, etc.

The term 'polymer' refers to a large molecule, or macromolecule, made up of repeating structural units usually connected by covalent chemical bonds. While many people use the word polymers when referring to plastics, the polymer family actually includes many natural and synthetic materials with properties typically associated with plastics. As an example, DNA and rubber both have status as polymers, but not a plastics.