During the last 30 years, the development of natural biodegradable polymers has attached significant and increasing scientific and industrial attention, particularly in meeting the growing demand for sustainable development. To protect the environment, biodegradable materials have significant advantages. Liquid nitrogen procedures that could enhance the mechanical strengths of polymer composite materials used in aircraft structures must be capable of withstanding an extreme temperature range of -200 °C. Rapid development in modern industrial societies has created a need for low-temperature biodegradable materials which can be used to develop engineering components with better thermo-mechanical, wear, and more resistance to corrosion properties. Consequently, cryogenic composite treatment has emerged as an essential factor in the current research and programmes to improve the material characteristics of natural composites.

Recently, Liquid nitrogen-based composites have been fabricated via different novel fabrication techniques and with novel biodegradable materials to improve their mechanical performances. Fabricating low-temperature engineering products used in aircraft, space vehicles, and submarines to cryogenic machinery such as liquid nitrogen fuel lines, fuel distribution tubes, jet engines, and portions of the motor pumps is majorly due to their simplicity in production, low cost and good mechanical properties. This special issue encourages researchers and scientists to submit novel original research and review works related to development, processing, and characterization of biodegradable composites in low temperature engineering applications.

Among the topics addressed are:

 Biodegradable materials at low temperatures

 Polymer-based lightweight materials at low temperatures

 Superconductors and their applications

 Metal matrix composites under low temperatures

 Low-temperature applications from aviation, space vehicles and jet engines etc.

 Refrigeration and liquefaction technology

 Mechanical and morphological behaviour of polymer materials under low temperatures

 Low-temperature properties of alloys, composites and insulation materials

 Novel cryogenic treatment techniques

 Recent development of heat transfer techniques

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Frontiers in Materials

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