Describe the term elastic memory with reference to thermoplastics. - Leaving Cert Engineering - Question f - 2015

Elastic memory refers to the inherent capability of certain thermoplastic materials to revert to their original shape after being deformed. This phenomenon occurs as the polymer chains within the material allow them to 'remember' their original configuration due to their elastic properties.

When a thermoplastic is subjected to deformation, it can take on a new shape. However, upon re-heating, the heat energy causes the polymer chains to regain their original arrangement. For example, if a thermoplastic has been bent to a specific angle, heating this material will result in it returning to its original form.

In summary, elastic memory in thermoplastics exemplifies the ability of polymers to recover from deformation through the application of heat, aligning with their designed properties.