Thermosoftening polymers

two seperate polymer chains (http://www.bbc.co.uk/staticarchive/147e6eda9d49f17e17362642f53bc589e4863b89.gif)

Polymer with no cross-links

Thermosoftening polymers soften when heated and can be shaped when hot. The shape will harden when it is cooled, but can be reshaped when heated up again. Poly(ethene) is a thermosoftening polymer. Its tangled polymer chains can uncoil and slide past each other, making it a flexible material.

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