Thermal properties of polythene plastics

Thermal properties of polythene plastics

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Thermal properties of polythene plastics. Both these polythene bottles have been heated in an oven at 110 degrees Celsius. Polythene is a thermoplastic hydrocarbon polymer. At lower left, the low-density polythene bottle melts, but the high-density polythene bottle (right) will not melt below 135 degrees Celsius.

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