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A free-volume interpretation of the influence of the glass transition on diffusion in amorphous polymers

✍ Scribed by J. S. Vrentas; J. L. Duda

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
821 KB
Volume
22
Category
Article
ISSN
0021-8995

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πŸ“œ SIMILAR VOLUMES

On free volume of polymers above the gla
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The magnitude of the activation energy for diffusion, ED. is shown to be inversely dependent on the fractional free volume of the polymer above Tg. From the proportionality of ED above and below Tg, the magnitude of El, below T, is also inversely dependent on the free volume in that temperature rang

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On the basis of microhardness (H) data measured at room temperature only for a number of polymers in the glassy state, a linear correlation between H and the glass transition temperature T g has been found (H Ο­ 1.97T g Οͺ 571). By means of this relationship, the deviation of the H values from the add