Structures and properties of polyhydroxyalkanoates synthesized by Methyloligella halotolerans C2 and Methylobacterium extorquens G10 from a methanol–pentanol mixture

The structures and properties of polyhydroxyalconoates and their polyhydroxybutyrate copolymers synthesized with the use of the bacteria Methyloligella halotolerans C2 and Methylobacterium extorquens G10 from methanol and its mixture with pentanol are studied. The compositions and molecular masses of the copolymers are shown to depend on their synthesis conditions and may vary widely. All the polymers are found to have high levels of crystallinity, and two types of crystals are detected in the copolymers.