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

Abstract

In this paper, the temperature memory effect (TME) in a commercial ethylenevinyl 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 ΔT) between the temperature of turning points