Journal of Polymer Science Part B: Polymer Physics, Vol.33, No.17, 2365-2371, 1995
Correlations Between Gas Permeation and Free-Volume Hole Properties Probed by Positron-Annihilation Spectroscopy
Free-volume hole sizes, fractions, and distributions in a series of polycarbonate-based polymers are measured by using positron annihilation lifetime (PAL) spectroscopy. Correlations between the obtained free-volume hole properties and gas diffusion coefficients are observed.
Keywords:PRESSURE-DEPENDENCE;POLYMERS;DISTRIBUTIONS;DIFFUSION;PROGRAM;POLYCARBONATES;PERMEABILITY;LIFETIME;CONTIN