SORPTION, DIFFUSION, AND PERMEATION COEFFICIENTS OF BENZENE, SUBSTITUTED BENZENES, AND BIS(2-METHOXYETHYL) ETHER INTO TETRAFLUOROETHYLENE PROPYLENE COPOLYMERIC SHEETS IN THE TEMPERATURE-RANGE FROM 298.15-K TO 343.15-K

Diffusion, permeation, and sorption equilibrium coefficients were dete rmined for benzene, substituted benzenes, and bis(2-methoxyethyl) ethe r into tetrafluoroethylene-propylene copolymeric sheets in the tempera ture range from 298.15 to 343.15 K. From a temperature dependence of t he transport coefficients, the activation parameters have been estimat ed. It is observed that the values of the transport coefficients and t he derived parameters depend on the nature of penetrant molecules rath er than their sizes.