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Investigation of transitions and relaxation processes in polystyrene by using positron annihilation

✍ Scribed by M. Ban; M. Kyoto; A. Uedono; T. Kawano; S. Tanigawa


Book ID
112680413
Publisher
Springer
Year
1996
Tongue
English
Weight
300 KB
Volume
210
Category
Article
ISSN
1588-2780

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πŸ“œ SIMILAR VOLUMES


Transition and relaxation processes of p
✍ A. Uedono; T. Kawano; S. Tanigawa; M. Ban; M. Kyoto; T. Uozumi πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 228 KB πŸ‘ 2 views

Transition and relaxation processes of polyethylene (PE), polypropylene (PP), and polystyrene (PS) were studied by the positron annihilation technique. From measurements of lifetime spectra of positrons as a function of temperature, the lifetime of ortho-positronium, t 3 , and its intensity, I 3 , w

Study of relaxation processes in polyeth
✍ 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

Study of sintering processes in copper a
✍ Dr. R. Krause; Prof. Dr.-Ing. Habil. W. Schatt; B. Vetter; A. Polity πŸ“‚ Article πŸ“… 1990 πŸ› John Wiley and Sons 🌐 English βš– 366 KB

## Abstract In the advanced stage of non‐isothermal sintering, vacancy clusters are present as prevailing type of defects. Their concentration considerably decreases at further temperature increase, and it can be concluded that thermally activated conversion of multiple vacancies into climbable dis