| Abstract: | Experimental results are presented for the permeation of propane and ethylene through polyethylene membranes and for the permeation of propane through “Saran” in the temperature range from —10 to 20°C and the pressure range from 20.0 to 50.0 psig. The flux of propane through polyethylene exhibits a minimum as the temperature approaches the condensation temperature. No such minimum was observed either for the flux of ethylene through polyethylene or for propane through “Saran”. The permeability coefficients for propane through polyethylene are compared with those predicted on the assumption of a diffusion coefficient exponentially dependent on the concentration of permeability. |
