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. 2018 Jan 3;8(1):2. doi: 10.3390/membranes8010002

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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FTIR spectrum of 2 wt % chitosan (a), chitosan–gelatin (1:1 g; r = 0.5) film/membrane without (b) and with ferulic acid crosslinker (c) using 1 wt % formic acid solvent.