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. 2017 May 16;7:1950. doi: 10.1038/s41598-017-02133-0

Figure 4.

Figure 4

FTIR of polyamide surface on the side directly opposite to the surface used for applying the RTIL with IL-6 solution. The spectra establish no hindrance to the wicking and diffusion of IL-6 in RTIL through the nanoporous membrane thickness.