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1999 | 95 | 4 | 659-662
Article title

The Influence of Deformation and Chemical Composition on Elementary Free Volumes in Glassy Polymers

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Abstracts
EN
A relation between positronium annihilation characteristics and concentration of elementary free volumes is considered for the case of positronium formation before its localization. We estimated the diffusion coefficient of nonlocalized positronium (≈10^{-4} cm^{2}/s). The positron annihilation lifetime studies of uniaxial compression and annealing of some glassy polymers revealed variations of the shape of elementary free volumes size-distributions.
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Contributors
  • Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina str., 117334, Moscow, Russia
author
  • Institute of General Physics, Russian Academy of Sciences, 38 Vavilov str., 117942, Moscow, Russia
author
  • Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina str., 117334, Moscow, Russia
author
  • Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina str., 117334, Moscow, Russia
author
  • Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
References
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bwmeta1.element.bwnjournal-article-appv95z438kz
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