Motion in Polyethylene. III. The Amorphous Polymer
- 15 November 1962
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 37 (10) , 2429-2432
- https://doi.org/10.1063/1.1733022
Abstract
The heat capacity of completely amorphous polyethylene is separated above 250°K into contributions from the optical vibrations, the acoustical vibrations and hindered rotations, the trans—gauche equilibrium, and the hole equilibrium. The glass transition interval which stretches from 250° to 120°K can be explained by a separate freezing in of the hole equilibrium at 237°K and a slower freezing in of the trans—gauche equilibrium, which is completely arrested at 120°K with 0.165 of the bonds left in the gauche position.Keywords
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