Polyethylene terephthalate, commonly coded as PET, PETE, is a thermoplastic polymer resin of the polyesters and is used in liquid containers, drinks, food and synthetic fibres. Depending on its processing and thermal conditions, PET may exist both as amorphous and as semi-crystalline.
→According to DSC scanning.
1) peak-1 is a glass transition peak
2) peak-2 is a cold crystallization peak
3) реаk-3 is a melting реаk