what is pet ? write down characteristics
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PET in its natural state is a colorless, semi-crystalline resin. Based on how it is processed, PET can be semi-rigid to rigid, and it is very lightweight. It makes a good gas and fair moisture barrier, as well as a good barrier to alcohol (requires additional "barrier" treatment) and solvents.
Abbreviations: PET, PETE
Related Monomers: Terephthalic acid; Ethylene glycol
Chemical formula: (C10H8O4)n
Density: 1.38 g/cm3 (20 °C), amorphous: 1.370 g/cm3, single crystal: 1.455 g/cm3
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