Abstract
AbstractIn 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 (Tg), within Tg and within melting (Tm), respectively, are included for the investigation. It is found that TME in polymers is not as reported to be limited at around either Tg or Tm only, the effective temperature range for TME could be actually much wider that covers from below Tg to up to Tm. In addition, it is concluded that higher heating stop temperature (Ts) erases the memory of previous lower ones in this EVA. Hysteresis (described by ΔT) between the temperature of turning points (Tts) and their corresponding Tss is always observable. However, the ΔT decreases at higher Ts.
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