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. 2012 Jun 20;2(2):325–345. doi: 10.3390/membranes2020325

Figure 1.

Figure 1

1H-NMR spectra recorded on 4 M aqueous methanol solution (CH3OD/D2O) as prepared and confined in Nafion membrane, respectively. The chemical shift variation of the methanol's signal is caused by the different chemical environment and the strong interactions with the polymer backbone.