Authors Dlubek, G. ; Kilburn, D. ; Bondarenko, V. ; Pionteck, J. ; Krause-Rehberg, R. ; Alam, M. A.
Title Positron Annihilation: An Unique Method for Studying Polymers
Date 14.05.2004
Number 11690
Abstract Positron annihilation is a unique technique for studying the local free volume of polymers. Employing the positron annihilation lifetime spectroscopy (PALS) the size and size distribution of subnanometer size holes which constitute the excess free volume may be studied. In combination with macroscopic volume data the fractional free volume and the number density of holes may be estimated. After presenting the principles of the method, some examples typically for the investigation of the free volume in polymers will be given. Moreover, the study of interdiffusion in demixed polymer blends and further applications are shortly reviewed
Publisher Macromolecular Symposia
Citation Macromolecular Symposia 210 (2004) 11-20

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