Interdisziplinäres Zentrum für Materialwissenschaften
  Publications [search]   
Offers for students
Interdisziplinäres Zentrum für Materialwissenschaften
Nanotechnikum Weinberg
Heinrich-Damerow-Str. 4,
D-06120 Halle, Germany
Phone: +49 345 55 28471
Telefax:+49 345 55 27390 e-mail:
[Papers] [Theses] [Reports] [Posters]

G. Dlubek, V. Bondarenko, I. Y. Al-Qaradawi, D. Kilburn, R. Krause-Rehberg
The structure of the free volume in poly(styrene-co-acrylonitrile) from positron lifetime and pressure vvolume temperature (PVT) experiments II. Local free volume from positron annihilation lifetime spectroscopy (PALS)
Macromol. Chem. Phys. 205 (2004), 512-522

The structure of the free volume and its temperature dependence between 25 and 190 ?C of copolymers of styrene with acrylonitrile, SAN (0 to 50 mol-% AN), is studied by pressure volume temperature (PVT) experiments and positron annihilation lifetime spectroscopy (PALS). In this first part of the work, PVT data are reported which were analysed with the Simha-Somcynsky equation of state (S-S eos) to estimate the volume fraction of holes, h, which constitute the excess free volume. The temperature and pressure dependence of the specific volume V, the specific occupied and free volume, Vocc = (1 -

Keywords: positron annihilation, polymers
View / Download

Impressum Copyright © Center of Materials Science, Halle, Germany. All rights reserved.