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The evolution of microstructure of polystyrene following pressure relaxation: a positron study

✍ Scribed by C.L. Wang; S.J. Wang

Book ID
104164357
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
436 KB
Volume
38
Category
Article
ISSN
0032-3861

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Study of relaxation processes in polyeth
Study of relaxation processes in polyethylene and polystyrene by positron annihilation
✍ A. Uedono; T. Kawano; S. Tanigawa; M. Ban; M. Kyoto; T. Uozumi πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 576 KB

Relaxation processes in polyethylene (PE) and polystyrene (PS) were studied by positron annihilation technique. For PE, above the glass transition temperature, T,, the size of free volumes and its concentration were increased by the micro-Brownian motion of molecules. For PS, local motions of molec