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Martin-Luther-University
Interdisziplinäres Zentrum für Materialwissenschaften
Nanotechnikum Weinberg
Heinrich-Damerow-Str. 4,
D-06120 Halle, Germany
Phone: +49 345 55 28471
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G. Dlubek, V. Bondarenko, J. Pionteck, D. Kilburn, G. Pompe, C. Taesler, F. Redmann, K. Petters, R. Krause-Rehberg, M. A. Alam
Studies of interdiffusion in polymer blends by PALS
Rad. Phys. Chem. 68 (2003), 369-373

It is shown that positron annihilation parameters such as the average positron livetime tauav ant the ortho-positronium intensity I3 respond to chemical inhomogeneities in disperse blends and their disappearance due to mutual diffusion of molecules of both phases, when Ps formation is inhibited by one of the constituents...

Keywords: polymers, positron annihilation, lifetime, diffusion
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