Abstract The preparation methods of nanocellular polymers in recent years were reviewed, such as block copolymer foam, nanocomposite foam, polymer blend foam, and improved traditional preparation methods. The unique thermal, mechanical, electrical and optical properties of nanocellular polymers were also introduced. Finally, the further research and development of nanocellular polymers were prospected, indicating that the preparation methods and properties of the nanocellular polymers would be further optimized.
