Ee. Abdelhady et al., MICROSTRUCTURE ANALYSIS OF THE EFFECT OF SRF CARBON-BLACK ON BUTYL RUBBER (IIR) BY POSITRON-ANNIHILATION LIFETIME SPECTROSCOPY, Polymer degradation and stability, 41(1), 1993, pp. 65-68
The positron annihilation lifetime technique (PAL) has been applied to
investigate the behaviour of the free volume (size and concentration)
in butyl rubber (IIR) as a function of the concentration of semi-rein
forcing furnace (SRF) carbon black. An attempt is to establish a corre
lation between the macroscopic mechanical and electrical properties of
rubber and the microscopic properties of the free volume holes. The d
ependence of the size and the fraction of free volume in rubber on the
concentration of SRF carbon black has been discussed on the basis of
the free volume model.