| Numéro |
J. Phys. IV France
Volume 03, Numéro C4, Septembre 1993
4th International Workshop on Positron and Positronium Chemistry
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|---|---|---|
| Page(s) | C4-257 - C4-260 | |
| DOI | https://doi.org/10.1051/jp4:1993439 | |
4th International Workshop on Positron and Positronium Chemistry
J. Phys. IV France 03 (1993) C4-257-C4-260
DOI: 10.1051/jp4:1993439
1 Department of Physics, Wuhan University, Wuhan 430072, P.R. of China
2 Departement of Chemistry, University Huazhong of Sci. [MATH] Tech., Wuhan 430074, P.R. of China
© EDP Sciences 1993
J. Phys. IV France 03 (1993) C4-257-C4-260
DOI: 10.1051/jp4:1993439
Structural transition of polyethylene oxide networks studied by positron annihilation
B. WANG1, Z.L. PENG1, Y.Q. DAI1, S.Q. LI1, S.J. WANG1, H. LIU2 and H.Q. XIE21 Department of Physics, Wuhan University, Wuhan 430072, P.R. of China
2 Departement of Chemistry, University Huazhong of Sci. [MATH] Tech., Wuhan 430074, P.R. of China
Abstract
Positron lifetime spectra have been measured for network polyethylene oxide (PEO) in the temperature range of 120 - 345K. The glass transition and secondary structural transition have been observed and the transition temperatures were determined. The changes of free-volume in amorphous regions and the defect properties in crystalline are discussed.
© EDP Sciences 1993