Polyhydroxyalkanoates (PHA) are polyesters that are produced in nature by numerous microorganisms. PHA is biodegradable and is used to manufacture bioplastics. Polyhydroxyalkanoates can be either thermoplastic or elastomeric materials. The mechanical properties and biocompatibility of PHA can be altered by blending or modifying with other polymers, enzymes, and inorganic materials allowing the material a wide range of applications.