Key Difference – Polyamide vs Polyimide Polyamide and polyimide are high-temperature-resistant thermoplastic elastomers with a wide range of applications. The major difference between polyamide and polyimide is in their chemical structures; polyamide has the amide (-CONH-) linkages in their polymer backbone, while polyimide has imide group (-CO-N-OC-) in their polymer backbone. These two polymers […]