Temperature memory effect from below glass transition to up to melting range in an ethylene‐vinyl acetate copolymer

In this paper, the temperature memory effect (TME) in a commercial ethylene‐vinyl acetate copolymer (EVA) is characterized via differential scanning calorimetry (DSC) tests. Three temperatures, which are 35, 60, and 85°C representing temperatures below glass transition ( T g ), within T g and within melting ( T m ), respectively, are included for the investigation. It is found that TME in polymers is not as reported to be limited at around either T g or T m only, the effective temperature range for TME could be actually much wider that covers from below T g to up to T m . In addition, it is concluded that higher heating stop temperature ( T s ) erases the memory of previous lower ones in this EVA. Hysteresis (described by Δ T ) between the temperature of turning points ( T t s) and their corresponding T s s is always observable. However, the Δ T decreases at higher T s .