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. 2021 Sep 16;11(9):713. doi: 10.3390/membranes11090713

Figure 4.

Figure 4

Dependence of H2 (a) and CH4 (b) permeances, ideal selectivities of O2-N2 (c) and H2-CH4 (d) for the virgin and fluorinated composite membranes (PMP [54], PTMSP [57], PSF [93], PPO [60], PVTMS [94], Matrimid [73]) on duration of the fluorination procedure in logarithmic coordinates.