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Diversifying Polyhydroxyalkanoates: Synthesis, Properties, Processing and Applications

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Green-Based Nanocomposite Materials and Applications

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Abstract

Polyhydroxyalkanoates (PHAs) are polyesters synthetized by microorganisms or a chemical synthetic route with inherent chemical and physical properties comparable to conventional non-biodegradable polymers but a less environmental impact. Furthermore, the new generations of PHAs have found engineering and specialties applications in biotechnological sector, biomedical for tissue engineering, drug delivery, etc. Similarly, synthesis, processing and recycle of PHAs involves processes that helps to change until a circular and green economy. Nevertheless, the low cost-effectiveness associated with fermentation and downstream processing for recovery and purification of PHAs after biopolymerization are one of the issues that remains. Additionally, PHAs offer several mechanical behaviors from hard to elastic due to partial crystallinity, wide values in glass transition temperature, variety of structures of repeating units, as well as several additives and fillers to design tailor-made properties. Moreover, PHAs are usually blended with other biodegradable polymers searching synergistic interactions (e.g., in mechanical, biodegradability, barrier properties, etc.) through miscibility modification and microdomains interactions for the diversification of their applications. Eventually, single use products of PHAs for packing could improve the managing plastics waste through reach short times of biodegradation, a carbon neutrality and the use of some residues and contaminants sources as raw materials for PHAs synthesis.

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Rivera Gálvez, F.J. (2023). Diversifying Polyhydroxyalkanoates: Synthesis, Properties, Processing and Applications. In: Avalos Belmontes, F., González, F.J., López-Manchado, M.Á. (eds) Green-Based Nanocomposite Materials and Applications. Engineering Materials. Springer, Cham. https://doi.org/10.1007/978-3-031-18428-4_11

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