Polyhydroxyalkanoates (PHAs) are a group of polyesters that are promising alternatives to conventional plastics due to their biodegradability and ability to be produced from renewable resources. Two common PHA monomers are hydroxybutyrate (HB) and hydroxyvalerate (HV). Pure PHB is stiff and brittle, whereas with the introduction of HV, the elasticity and flexibility increased, providing the polymer with properties similar to polypropylene (Albuquerque et al., 2011 and Arcos-Hernández et al., 2013). Thus, the production of the HB and HV copolymer, namely P(HB/HV), is currently attracting much interest from researchers.