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  • Polyhydroxyalkanoates or PHAs are linear polyesters produced in nature by bacterial fermentationof sugar or lipids.
  • PHA are produced by the bacteria to store carbon and energy.
  • PHA plastics are biodegradeable and are used in the production of bioplastics.
  • PHA can be either thermoplastic or elastomeric materials, with melting points ranging from 40 to 180 °C.
  • The mechanical and biocompatibility of PHA can also be changed by blending, modifying the surface or combining PHA with other polymers, enzymes and inorganic materials, making it possible for a wider range of applications.
  • PHA polymers are thermoplastic, can be processed on conventional processing equipment, and are, depending on their composition, ductile and more or less elastic.
  • Processability, impact strength and flexibility improves with a higher percentage of valerate in the material.
  • PHA has a good resistance to moisture and aroma barrier properties
  • A PHA copolymer called PHBV is less stiff and tougher, and it may be used as packaging material.
  • There are potential applications for PHA produced by micro-organisms within the medical and pharmaceutical industries, primarily due to their biodegradability.
  • Polyhydroxyalkanoastes (PHAs) are naturally-occurring polymers produced by bacteria.
  • They are for use in many applications, including molded goods, paper coatings, non-woven fabrics, performance additives.
  • Another method of producing PHAs is genetically-modifying plants to produce PHAs
  • Benefits • Development Of PHA polymers that compete Economically with Conventional Fossil-based Polymers• Improved Performance Of Other Biobased Polymers Through Blending with PHAs

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