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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/).
(a) C−F stretching region from the FTIR spectra of the inside and outside regions of the FSCSNs-coated PU foam and the bare PU foam. (b) Static contact angle (CA) measurement results for bare PU foam and FSCSNs-coated PU foam.