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. Author manuscript; available in PMC: 2011 May 15.
Published in final edited form as: J Memb Sci. 2010 May 15;354(1-2):198–205. doi: 10.1016/j.memsci.2010.02.047

Fig. 2.

Fig. 2

ATR-FTIR spectra of 5-µm nylon membranes before and after modification with PSS/PEI films. The ratios of the sulfonate absorbances to the amide I absorbance increase with deposition of more PEI/PSS layers.