An elastomer is a polymeric material capable of large substantially recoverable deformation. Flexible chain segments supply configurational entropy, while a network of permanent or sufficiently long-lived cross-links prevents unrestricted macroscopic flow on the observation time scale. Its dynamic modulus depends on whether segmental relaxation can follow the imposed deformation. The rubbery plateau and high-frequency glassy response refer to different accessible relaxation regimes.
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An elastomer is a type of polymer that has elastic properties, meaning it can stretch and return to its original shape without permanent deformation. These materials are characterized by their ability to undergo significant elastic deformation when a force is applied and then recover quickly once the force is removed. This makes elastomers particularly useful in a wide range of applications where flexibility and resilience are important.