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. 2021 Apr 1;11(4):255. doi: 10.3390/membranes11040255

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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(a) A cross-sectional SEM micrograph of the SA-5HF/PAN^CaCl2-5Lbl^PSS/SA membrane and surface AFM images for the (b) SA/PAN^CaCl2-5Lbl^PSS/SA, (c) SA-5AF/PAN^CaCl2-5Lbl^PSS/SA, and (d) SA-5HF/PAN^CaCl2-5Lbl^PSS/SA membranes.