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Glass transition: ‘Spin’ fluctuations or free volume ?

✍ Scribed by R. Skomski

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
362 KB
Volume
91
Category
Article
ISSN
0038-1098

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📜 SIMILAR VOLUMES

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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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## Abstract Summary: Positron annihilation lifetime spectroscopy, differential scanning calorimetry, wide‐angle X‐ray scattering, and density measurements were used to systematically study the variation of the glass transition temperature __T__~g~ and the mean size __v__~h~ of holes (local free vol