Influence of Temperature and Pressure on the Free Volume in Thermo-Shrunken Polyethylene by Positron Annihilation

• Authors: A. Danch , W. Osoba , J. Wawryszczuk
• Languages of publication: EN

Abstracts

EN

Positron lifetime measurements were performed as a function of temperature and pressure for thermo-shrunken polyethylene. Mean volume of free volume cavities in the investigated polymer was estimated from the results of the measurements. This mean volume turned out to be the smooth function of temperature (from room temperature to 8.5 K) and high pressure (from 0.1 MPa to about 500 MPa). The effect of trapping of the free electrons produced during positron irradiation was observed at low temperature.

Keywords

EN

71.60.+z; 78.70.Bj

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 71.60.+z: Positron states(for positron annihilation, see 78.70.Bj)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 5
• Pages: 1307-1313

Dates

published

2008-05

received

2007-09-03

Contributors

author

A. Danch

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

W. Osoba

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

J. Wawryszczuk

• Institute of Physics, Maria Curie-Skłodowska University, pl. Marii Curie-Skłodowskiej 1, 20-031 Lublin, Poland

References

• 1. Y. Jean, Microchemical J. 42, 72 (1990)
• 2. P.E. Mallon, in: Principles and Application of Positron&Positroniu Chemistry, Eds. Y.C. Jean, P.E. Mallon, D.M. Schrader, World Scientific, New Jersey 2003, p. 253
• 3. T. Hirade, F.H.J. Maurer, M. Eldrup, Radiat. Phys. Chem. 58, 465 (2000)
• 4. G. Dlubek, J. Wawryszczuk J. Pionteck, T. Goworek, H. Kaspar, K. Lochhaas, Macromolecules 38, 429 (2005)
• 5. P. Kirkegaard, N. Pedersen, M. Eldrup, PATFIT-88: A Data Processing System for Positron Annihilation Spectra on Mainframe and Personal Computers. Riso-M-2740, 1 (1989)
• 6. J. Kansy, Nucl. Instrum. Methods Phys. Res. A 374, 235 (1996)
• 7. S. Tao, J. Chem. Phys. 56, 5499 (1972)
• 8. M. Eldrup, D. Lightbody, J. Sherwood, Chem. Phys. 63, 51 (1981)
• 9. J. Zrubcová, J. Krištiak, W. Pedersen, N. Pedersen, M. Eldrup, Mater. Sci. Forum 363-365, 359 (2001)
• 10. C. He, T. Suzuki, L. Ma, M. Matsuo, V.P. Shantarovich, K. Kondo, Y. Ito, Phys. Lett. A 304, 49 (2002)
• 11. R. Keyser, K. Tsuji, F. Williams, in: The Radiation Chemistry of Macromolecules, Ed. M. Mole, Academic Press, New York 1972, Ch. 9
• 12. G. Reiter, P. Kindl, Phys. Status Solidi A 118, 161 (1990)
• 13. N. Balcaen, J. de Baerdemaeker, C. Dauwe, K. Cosaert, E. Goethals, F. du Prez, Radiat. Phys. Chem. 58, 497 (2000)
• 14. Z. Chen, T. Suzuki, A. Uedono, S. Tanigawa, Y. Ito, Mater. Sci. Forum. 363-365, 297 (2001)
• 15. C. He, T. Suzuki, L. Ma, M. Matsuo, V.P. Shantarovich, K. Kondo, Y. Ito, Phys. Lett. A 304, 49 (2002)

Identifiers

DOI

10.12693/APhysPolA.113.1307