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- W1986288961 abstract "The transport of argon in membranes of poly(bisphenol A carbonate-co-4,4‘-(3,3,5-trimethylcyclohexylidene)diphenol carbonate), under differences of pressure, Δp, lying in the interval 8−160 cmHg and in the temperature range 30−55 °C, is described. The experimental values of the permeability and diffusion coefficients at 30 °C and Δp = 76 cmHg are 4.5 barrers and 3.0 × 10-8 cm2 s-1, respectively. The values of these parameters are nearly independent of the differences of pressure between the two faces of the membrane. The permeability and the diffusion coefficients obey Arrhenius behavior with activation energies of 3.7 and 6.7 kcal mol-1, respectively. The permeation of argon in the membranes was simulated using the transition-state approach. Good agreement between simulated and experimental results is found by assuming that the polymer chains of the membrane fluctuate around equilibrium positions with a root-mean-square deviation Δ of 0.3 Å at 40 °C. Comparison of the experimental and simulated values for the diffusion and solubility coefficients suggests that the value of Δ increases with temperature at a rate of 0.005 Å K-1." @default.
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- W1986288961 date "2001-06-06" @default.
- W1986288961 modified "2023-10-17" @default.
- W1986288961 title "Experimental and Simulation Studies on the Transport of Argon in Polycarbonate Membranes" @default.
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- W1986288961 doi "https://doi.org/10.1021/ma0019508" @default.
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