The Effect of Impact Pressure on Positron Lifetime in Ultra High Molecular Weight Polyethylene (PE-UHMW)Chirulen®1120


Article Preview

The paper presents the results of investigations of the effect of impact pressure (in the range of both elastic and plastic deformations) on the parameters of the positron lifetime spectra in PE-UMHW polymer known under the trade mark Chirulen1120. The changes in the long-living component of the positron lifetime spectrum, connected with the annihilation of o-Ps in the pick-off process, are analyzed in dependence on the impact energy. The impact duration in the Charpy’s tests depending on the impact energy was measured, too. The dependencies of the radius of the volume of empty spaces in which the positronium annihilates, on the impact pressure were determined applying the Eldrup-Tao model.



Edited by:

Radosław Zaleski




R. Pietrzak and R. Szatanik, "The Effect of Impact Pressure on Positron Lifetime in Ultra High Molecular Weight Polyethylene (PE-UHMW)Chirulen®1120", Materials Science Forum, Vol. 666, pp. 85-88, 2011

Online since:

December 2010




[1] M. Sudoł: Studies on electron-beam irradiation and plastic deformation of medical-grade ultra-high molecular weight polyethylene (UHMWPE) – dissertation (in polish). Eds. Department of Mathematics, Physics and Chemistry Opole University, Opole (2006).

DOI: 10.1016/j.radphyschem.2010.11.008

[2] G. Dlubek, T. Lüpke, H.M. Fretwell, M.A. Alam, A. Wutzler and H. -J. Radusch: Acta Polymer. Vol. 49 (1998) p.236.

DOI: 10.1002/(sici)1521-4044(199805)49:5<236::aid-apol236>;2-5

[3] G. Dlubek, M.A. Alam, K. Saarinen, J. Stejny and H.M. Fretwell: Acta Phys. Pol. A Vol. 95 (1999) p.52.

[4] J. Kansy: Nucl. Instrum. Methods Phys. Res., Sect. A Vol. 374 (1996), p.235.

[5] Y. Ito, T. Hirade, E. Hamada, T. Suzuki and Y. Ito: Acta Phys. Pol. A Vol. 95 (1999), p.533.

[6] A. Danch, W. Osoba and J. Wawryszczuk: Acta Phys. Pol. A Vol. 113 (2008) p.1307.

[7] E. Gomoa, N. Mostafa, M. Mohsen and M. Mohammed: J. Mater. Eng. Perform. Vol. 13 (2004) p.538.

[8] S.J. Tao: J. Chem. Phys. Vol. 56 (1972) p.5499.

Fetching data from Crossref.
This may take some time to load.