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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/).
Representation of 86.5% deacetylated chitosan units before surface modification with hexanoyl chloride, center) surface modified chitosan with a degree of substitution (DS) = 1, and right) surface modified chitosan with a DS = 2.